diff --git a/abi/addabi.php b/abi/addabi.php
index cee4b52..bf30f3e 100644
--- a/abi/addabi.php
+++ b/abi/addabi.php
@@ -11,6 +11,18 @@ require('../db.php');
 require("../function/function.php");
 blockedIP($_SERVER['REMOTE_ADDR']);
 
+$pdo = null;
+try {
+    $option = array(
+        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+        PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+    );
+    $pdo = new PDO('mysql:charset=utf8mb4;dbname='.DB_NAME.';host='.DB_HOST , DB_USER, DB_PASS, $option);
+} catch(PDOException $e) {
+    // 接続エラーのときエラー内容を取得する
+    $error_message[] = $e->getMessage();
+}
+
 if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['abitext'])) && safetext(isset($_POST['userid'])) && safetext(isset($_POST['account_id'])) && safetext(isset($_COOKIE['loginkey']))) {
     $userid = safetext($_POST['userid']);
 
@@ -23,113 +35,100 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['abitext'])) && s
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }elseif(is_sameUserid($userid, $is_login["userid"]) === true){
+        $abidate = date("Y-m-d H:i:s");
 
-    $abidate = date("Y-m-d H:i:s");
+        $query = $pdo->prepare('SELECT * FROM ueuse WHERE uniqid = :uniqid limit 1');
 
-    // データベース接続の設定
-    $dbh = new PDO('mysql:charset=utf8mb4;dbname='.DB_NAME.';host='.DB_HOST, DB_USER, DB_PASS, array(
-        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-        PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true,
-    ));
+        $query->execute(array(':uniqid' => $postUniqid));
 
-    $query = $dbh->prepare('SELECT * FROM ueuse WHERE uniqid = :uniqid limit 1');
+        $result = $query->fetch();
 
-    $query->execute(array(':uniqid' => $postUniqid));
+        if($result["account"] === $userid){
+            $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
 
-    $result = $query->fetch();
+            $query->execute(array(':userid' => $userid));
 
-    if($result["account"] === $userid){
-        // データベース接続の設定
-        $dbh = new PDO('mysql:charset=utf8mb4;dbname='.DB_NAME.';host='.DB_HOST, DB_USER, DB_PASS, array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-            PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true,
-        ));
+            $result2 = $query->fetch();
 
-        $query = $dbh->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
-
-        $query->execute(array(':userid' => $userid));
-
-        $result2 = $query->fetch();
-
-        if($result2["loginid"] === $loginid){
-            if($result["abi"] == "none" && (!($result2["role"] == "ice"))){
-                // 文字数を確認
-                if( (int)safetext(file_get_contents($mojisizefile)) < mb_strlen(str_replace("\r\n", "\n", $abitext), 'UTF-8') ) {
-                    $err = "content_to_".safetext(file_get_contents($mojisizefile))."_characters";
-                    $response = array(
-                        'error_code' => $err,
-                    );
-                    echo json_encode($response, JSON_UNESCAPED_UNICODE);
-                    exit;
-                }
-                // 禁止url確認
-                if(!(empty($banurl))){
-                    for($i = 0; $i < count($banurl); $i++) {
-                        if (false !== strpos($abitext, 'https://'.$banurl[$i])) {
-                            $err = "contains_prohibited_url";
-                            $response = array(
-                                'error_code' => $err,
-                            );
-                            echo json_encode($response, JSON_UNESCAPED_UNICODE);
-                            exit;
+            if($result2["loginid"] === $loginid){
+                if($result["abi"] == "none" && (!($result2["role"] == "ice"))){
+                    // 文字数を確認
+                    if( (int)safetext(file_get_contents($mojisizefile)) < mb_strlen(str_replace("\r\n", "\n", $abitext), 'UTF-8') ) {
+                        $err = "content_to_".safetext(file_get_contents($mojisizefile))."_characters";
+                        $response = array(
+                            'error_code' => $err,
+                        );
+                        echo json_encode($response, JSON_UNESCAPED_UNICODE);
+                        exit;
+                    }
+                    // 禁止url確認
+                    if(!(empty($banurl))){
+                        for($i = 0; $i < count($banurl); $i++) {
+                            if (false !== strpos($abitext, 'https://'.$banurl[$i])) {
+                                $err = "contains_prohibited_url";
+                                $response = array(
+                                    'error_code' => $err,
+                                );
+                                echo json_encode($response, JSON_UNESCAPED_UNICODE);
+                                exit;
+                            }
                         }
                     }
-                }
-                
-
-                try {
-                    $pdo = new PDO('mysql:charset=utf8mb4;dbname='.DB_NAME.';host='.DB_HOST , DB_USER, DB_PASS);
-
-                    $pdo->beginTransaction();
-
-                    $stmt = $pdo->prepare("UPDATE ueuse SET abi = :abi, abidate = :abidate WHERE uniqid = :uniqid AND account = :userid");
-                    $stmt->bindValue(':abi', $abitext, PDO::PARAM_STR);
-                    $stmt->bindValue(':abidate', $abidate, PDO::PARAM_STR);
-                    $stmt->bindValue(':uniqid', $postUniqid, PDO::PARAM_STR);
-
-                    $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
                     
-                    // SQLクエリの実行
-                    $res = $stmt->execute();
 
-                    // コミット
-                    $pdo->commit();
+                    try {
+                        $pdo->beginTransaction();
 
-                    $mentionedUsers = get_mentions_userid($abitext);
+                        $stmt = $pdo->prepare("UPDATE ueuse SET abi = :abi, abidate = :abidate WHERE uniqid = :uniqid AND account = :userid");
+                        $stmt->bindValue(':abi', $abitext, PDO::PARAM_STR);
+                        $stmt->bindValue(':abidate', $abidate, PDO::PARAM_STR);
+                        $stmt->bindValue(':uniqid', $postUniqid, PDO::PARAM_STR);
 
-                    foreach ($mentionedUsers as $mentionedUser) {
-                        $touserid = safetext($mentionedUser);
-                        $datetime = date("Y-m-d H:i:s");
-                        $msg = safetext("" . $abitext . "");
-                        $title = safetext("" . $result2["username"] . "さんにメンションされました！");
-                        $url = safetext("/!" . $postUniqid . "~" . $userid . "");
-                        $userchk = 'none';
-                        $category = 'mention';
-                
-                        send_notification($touserid,$userid,$title,$msg,$url,$category);
-                    }
+                        $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
+                        
+                        // SQLクエリの実行
+                        $res = $stmt->execute();
 
-                    if ($res) {
-                        echo json_encode(['success' => true]);
-                        exit;
-                    } else {
-                        echo json_encode(['success' => false, 'error' => '追加に失敗しました。']);
+                        // コミット
+                        $pdo->commit();
+
+                        $mentionedUsers = get_mentions_userid($abitext);
+
+                        foreach ($mentionedUsers as $mentionedUser) {
+                            $touserid = safetext($mentionedUser);
+                            $datetime = date("Y-m-d H:i:s");
+                            $msg = safetext("" . $abitext . "");
+                            $title = safetext("" . $result2["username"] . "さんにメンションされました！");
+                            $url = safetext("/!" . $postUniqid . "~" . $userid . "");
+                            $userchk = 'none';
+                            $category = 'mention';
+                    
+                            send_notification($touserid,$userid,$title,$msg,$url,$category);
+                        }
+
+                        if ($res) {
+                            echo json_encode(['success' => true]);
+                            exit;
+                        } else {
+                            echo json_encode(['success' => false, 'error' => '追加に失敗しました。']);
+                            exit;
+                        }
+                    } catch(PDOException $e) {
+                        echo json_encode(['success' => false, 'error' => 'データベースエラー：' . $e->getMessage()]);
                         exit;
                     }
-                } catch(PDOException $e) {
-                    echo json_encode(['success' => false, 'error' => 'データベースエラー：' . $e->getMessage()]);
-                    exit;
+                }else{
+                    echo json_encode(['success' => false, 'error' => 'すでに追記済みです。']);
+                    exit; 
                 }
-            }else{
-                echo json_encode(['success' => false, 'error' => 'すでに追記済みです。']);
-                exit; 
-            }
 
-            
+                
+            }
         }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }
 ?>
diff --git a/admin/addadmin.php b/admin/addadmin.php
index 73af838..087dfec 100644
--- a/admin/addadmin.php
+++ b/admin/addadmin.php
@@ -142,15 +142,7 @@ if( !empty($_POST['btn_submit']) ) {
             if ($result) {
                 $iconName = $uploadedPath;
             } else {
-                $errnum = $uploadedFile['error'];
-                if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                $error_message[] = 'アップロード失敗！(1)エラーコード：' .$uploadedFile['error'].'';
+                $error_message[] = 'アップロード失敗！(1)エラーコード： ERROR';
             }
         }
         if(isset($s3result)){
@@ -162,47 +154,45 @@ if( !empty($_POST['btn_submit']) ) {
         }
     } else {
         $uploadedFile = $_FILES['image'];
-        if(!(empty($uploadedFile['tmp_name']))){
-            if(check_mime($uploadedFile['tmp_name'])){
-                $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
-                delete_exif($extension, $uploadedFile['tmp_name']);
-                resizeImage($uploadedFile['tmp_name'], 512, 512);
+        $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../usericons/');
+        if($beforeUploadError === null){
+            if(!(empty($uploadedFile['tmp_name']))){
+                if(check_mime($uploadedFile['tmp_name'])){
+                    $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
+                    delete_exif($extension, $uploadedFile['tmp_name']);
+                    resizeImage($uploadedFile['tmp_name'], 512, 512);
 
-                if(AMS3_CHKS == "true"){
-                    $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                    if(AMS3_CHKS == "true"){
+                        $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                    }else{
+                        if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
+                            $newFilename = createUniqId() . '-'.$userid.'.webp';
+                        }else{
+                            $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
+                        }
+                        $uploadedPath = 'usericons/' . $newFilename;
+                        $result = move_uploaded_file($uploadedFile['tmp_name'], "../".$uploadedPath);
+                        
+                        if ($result) {
+                            $iconName = $uploadedPath; // 保存されたファイルのパスを使用
+                        } else {
+                            $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../usericons/') ?? "ERROR";
+                            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
+                        }
+                    }
+                    if(isset($s3result)){
+                        if($s3result == false){
+                            $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
+                        }else{
+                            $iconName = $s3result; // S3に保存されたファイルのパスを使用
+                        }
+                    }   
                 }else{
-                    if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
-                        $newFilename = createUniqId() . '-'.$userid.'.webp';
-                    }else{
-                        $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
-                    }
-                    $uploadedPath = 'usericons/' . $newFilename;
-                    $result = move_uploaded_file($uploadedFile['tmp_name'], "../".$uploadedPath);
-                    
-                    if ($result) {
-                        $iconName = $uploadedPath; // 保存されたファイルのパスを使用
-                    } else {
-                        $errnum = $uploadedFile['error'];
-                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                        $error_message[] = 'アップロード失敗！(1)エラーコード：' .$errcode.'';
-                    }
+                    $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
                 }
-                if(isset($s3result)){
-                    if($s3result == false){
-                        $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
-                    }else{
-                        $iconName = $s3result; // S3に保存されたファイルのパスを使用
-                    }
-                }   
-            }else{
-                $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
             }
+        }else{
+            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
         }
     }
 
@@ -218,15 +208,7 @@ if( !empty($_POST['btn_submit']) ) {
         if ($result) {
             $headName = $uploadedPath;
         } else {
-            $errnum = $uploadedFile['error'];
-            if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-            if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-            if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-            if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-            if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-            if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-            if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-            $error_message[] = 'アップロード失敗！(2)エラーコード：' .$uploadedFile['error'].'';
+            $error_message[] = 'アップロード失敗！(1)エラーコード： ERROR';
         }
     }
     if(isset($s3result)){
diff --git a/api/me/settings/index.php b/api/me/settings/index.php
index 839ad65..3e686aa 100644
--- a/api/me/settings/index.php
+++ b/api/me/settings/index.php
@@ -111,18 +111,30 @@ if (isset($_GET['token']) || (!(empty($Get_Post_Json)))) {
 
 
             if (!(empty($post_json["icon"]))) {
-                $imageData = base64_decode($post_json["icon"], true);
+                $iconBase64 = $post_json["icon"];
 
-                $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
-                file_put_contents($tmpFilePath, $imageData);
+                if (strpos($iconBase64, ',') !== false) {
+                    $iconBase64 = explode(',', $iconBase64)[1];
+                }
 
-                $IconFiles = [
-                    'name' => 'upload.png',
-                    'type' => check_mime($tmpFilePath),
-                    'tmp_name' => $tmpFilePath,
-                    'error' => UPLOAD_ERR_OK,
-                    'size' => strlen($imageData),
-                ];
+                $imageData = base64_decode($iconBase64, true);
+
+                if ($imageData === false) {
+                    $error_message[] = 'Base64のデコードに失敗しました！(base64_decode_failed)';
+                } else {
+                    $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
+                    file_put_contents($tmpFilePath, $imageData);
+
+                    clearstatcache(true, $tmpFilePath);
+
+                    $IconFiles = [
+                        'name' => 'upload.png',
+                        'type' => check_mime($tmpFilePath),
+                        'tmp_name' => $tmpFilePath,
+                        'error' => UPLOAD_ERR_OK,
+                        'size' => filesize($tmpFilePath),
+                    ];
+                }
             } else {
                 $IconFiles = array();
             }
@@ -131,85 +143,55 @@ if (isset($_GET['token']) || (!(empty($Get_Post_Json)))) {
             if (isset($IconFiles)) {
                 if (!(empty($IconFiles['name']))) {
                     $uploadedFile = $IconFiles;
-                    if (check_mime($uploadedFile['tmp_name'])) {
-                        $extension = pathinfo($uploadedFile['name'], PATHINFO_EXTENSION);
-                        delete_exif($extension, $uploadedFile['tmp_name']);
-                        resizeImage($uploadedFile['tmp_name'], 512, 512);
+                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../../../usericons/');
+                    if($beforeUploadError === null){
+                        if (check_mime($uploadedFile['tmp_name'])) {
+                            $extension = pathinfo($uploadedFile['name'], PATHINFO_EXTENSION);
+                            delete_exif($extension, $uploadedFile['tmp_name']);
+                            resizeImage($uploadedFile['tmp_name'], 512, 512);
 
-                        if (AMS3_CHKS == "true") {
-                            $usericonurl = getUserData($pdo, $userid)["iconname"];
-                            if (filter_var($usericonurl, FILTER_VALIDATE_URL)) {
-                                $s3delresult = deleteAmazonS3($usericonurl);
+                            if (AMS3_CHKS == "true") {
+                                $usericonurl = getUserData($pdo, $userid)["iconname"];
+                                if (filter_var($usericonurl, FILTER_VALIDATE_URL)) {
+                                    $s3delresult = deleteAmazonS3($usericonurl);
+                                } else {
+                                    $s3delresult = true;
+                                }
+                                if ($s3delresult == true) {
+                                    $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                                } else {
+                                    $s3result = false;
+                                }
                             } else {
-                                $s3delresult = true;
+                                if (check_mime($uploadedFile['tmp_name']) == "image/webp") {
+                                    $newFilename = createUniqId() . '-' . $userid . '.webp';
+                                } else {
+                                    $newFilename = createUniqId() . '-' . $userid . '.' . $extension;
+                                }
+                                $uploadedPath = 'usericons/' . $newFilename;
+                                $result = rename($uploadedFile['tmp_name'], __DIR__ . '/../../../' . $uploadedPath);
+
+                                if ($result) {
+                                    $iconName = $uploadedPath; // 保存されたファイルのパスを使用
+                                    $currentIconPath = getUserData($pdo, $userid)["iconname"];
+                                } else {
+                                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../../../usericons/') ?? "ERROR";
+                                    $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
+                                }
                             }
-                            if ($s3delresult == true) {
-                                $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
-                            } else {
-                                $s3result = false;
+                            if (isset($s3result)) {
+                                if ($s3result == false) {
+                                    $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
+                                } else {
+                                    $iconName = $s3result; // S3に保存されたファイルのパスを使用
+                                    $currentIconPath = getUserData($pdo, $userid)["iconname"];
+                                }
                             }
                         } else {
-                            if (check_mime($uploadedFile['tmp_name']) == "image/webp") {
-                                $newFilename = createUniqId() . '-' . $userid . '.webp';
-                            } else {
-                                $newFilename = createUniqId() . '-' . $userid . '.' . $extension;
-                            }
-                            $uploadedPath = 'usericons/' . $newFilename;
-                            $result = rename($uploadedFile['tmp_name'], __DIR__ . '/../../../' . $uploadedPath);
-
-                            if ($result) {
-                                $iconName = $uploadedPath; // 保存されたファイルのパスを使用
-                                $currentIconPath = getUserData($pdo, $userid)["iconname"];
-                            } else {
-                                $errnum = $uploadedFile['error'];
-                                $errcode = "ERROR";
-
-                                switch ($errnum) {
-                                    case 1:
-                                        $errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";
-                                        break;
-                                    case 2:
-                                        $errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";
-                                        break;
-                                    case 3:
-                                        $errcode = "FILE_SUKOSHIDAKE_UPLOAD";
-                                        break;
-                                    case 4:
-                                        $errcode = "FILE_UPLOAD_DEKINAKATTA";
-                                        break;
-                                    case 6:
-                                        $errcode = "TMP_FOLDER_NAI";
-                                        break;
-                                    case 7:
-                                        $errcode = "FILE_KAKIKOMI_SIPPAI";
-                                        break;
-                                    case 8:
-                                        $errcode = "PHPINFO()_KAKUNIN";
-                                        break;
-                                    case 0:
-                                        // 成功だったのに move_uploaded_file() が失敗した
-                                        if (!is_uploaded_file($uploadedFile['tmp_name'])) {
-                                            $errcode = "TMP_FILE_NAI";
-                                        } elseif (!is_writable(__DIR__ . '/../../../usericons/')) {
-                                            $errcode = "SAVE_FOLDER_KAKIKOMI_KENNAI";
-                                        } else {
-                                            $errcode = "MOVE_UPLOAD_FILE_SIPPAI";
-                                        }
-                                        break;
-                                    }
-                                $error_message[] = 'アップロード失敗！(1)エラーコード：' . $errcode . '';
-                            }
+                            $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
                         }
-                        if (isset($s3result)) {
-                            if ($s3result == false) {
-                                $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
-                            } else {
-                                $iconName = $s3result; // S3に保存されたファイルのパスを使用
-                                $currentIconPath = getUserData($pdo, $userid)["iconname"];
-                            }
-                        }
-                    } else {
-                        $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
+                    }else{
+                        $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
                     }
                 }
             }
@@ -217,107 +199,87 @@ if (isset($_GET['token']) || (!(empty($Get_Post_Json)))) {
                 $add_sql[] = "iconname = :iconname";
             }
 
-
             if (!(empty($post_json["header"]))) {
-                $imageData = base64_decode($post_json["header"], true);
+                $headerBase64 = $post_json["header"];
 
-                $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
-                file_put_contents($tmpFilePath, $imageData);
+                if (strpos($headerBase64, ',') !== false) {
+                    $headerBase64 = explode(',', $headerBase64)[1];
+                }
 
-                $HeadFiles = [
-                    'name' => 'upload.png',
-                    'type' => check_mime($tmpFilePath),
-                    'tmp_name' => $tmpFilePath,
-                    'error' => UPLOAD_ERR_OK,
-                    'size' => strlen($imageData),
-                ];
+                $imageData = base64_decode($headerBase64, true);
+
+                if ($imageData === false) {
+                    $error_message[] = 'Base64のデコードに失敗しました！(base64_decode_failed)';
+                } else {
+                    $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
+                    file_put_contents($tmpFilePath, $imageData);
+
+                    clearstatcache(true, $tmpFilePath);
+
+                    $HeadFiles = [
+                        'name' => 'upload.png',
+                        'type' => check_mime($tmpFilePath),
+                        'tmp_name' => $tmpFilePath,
+                        'error' => UPLOAD_ERR_OK,
+                        'size' => filesize($tmpFilePath),
+                    ];
+                }
             } else {
                 $HeadFiles = array();
             }
 
-
             if (isset($HeadFiles)) {
                 if (!(empty($HeadFiles['name']))) {
                     $uploadedFile = $HeadFiles;
-                    if (check_mime($uploadedFile['tmp_name'])) {
-                        $extension = pathinfo($uploadedFile['name'], PATHINFO_EXTENSION);
-                        delete_exif($extension, $uploadedFile['tmp_name']);
-                        resizeImage($uploadedFile['tmp_name'], 2048, 1024);
+                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../../../userheads/');
+                    if($beforeUploadError === null){
+                        if (check_mime($uploadedFile['tmp_name'])) {
+                            $extension = pathinfo($uploadedFile['name'], PATHINFO_EXTENSION);
+                            delete_exif($extension, $uploadedFile['tmp_name']);
+                            resizeImage($uploadedFile['tmp_name'], 2048, 1024);
 
-                        if (AMS3_CHKS == "true") {
-                            $userheadurl = getUserData($pdo, $userid)["headname"];
-                            if (filter_var($userheadurl, FILTER_VALIDATE_URL)) {
-                                $s3delresult = deleteAmazonS3($userheadurl);
+                            if (AMS3_CHKS == "true") {
+                                $userheadurl = getUserData($pdo, $userid)["headname"];
+                                if (filter_var($userheadurl, FILTER_VALIDATE_URL)) {
+                                    $s3delresult = deleteAmazonS3($userheadurl);
+                                } else {
+                                    $s3delresult = true;
+                                }
+                                if ($s3delresult == true) {
+                                    $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                                } else {
+                                    $s3result = false;
+                                }
                             } else {
-                                $s3delresult = true;
+                                if (check_mime($uploadedFile['tmp_name']) == "image/webp") {
+                                    $newFilename = createUniqId() . '-' . $userid . '.webp';
+                                } else {
+                                    $newFilename = createUniqId() . '-' . $userid . '.' . $extension;
+                                }
+                                $uploadedPath = 'userheads/' . $newFilename;
+                                $result = rename($uploadedFile['tmp_name'], __DIR__ . '/../../../' . $uploadedPath);
+
+                                if ($result) {
+                                    $headName = $uploadedPath; // 保存されたファイルのパスを使用
+                                    $currentHeadPath = getUserData($pdo, $userid)["headname"];
+                                } else {
+                                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../../../userheads/') ?? "ERROR";
+                                    $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
+                                }
                             }
-                            if ($s3delresult == true) {
-                                $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
-                            } else {
-                                $s3result = false;
+                            if (isset($s3result)) {
+                                if ($s3result == false) {
+                                    $error_message[] = 'アップロード失敗！(2)エラーコード： S3ERROR';
+                                } else {
+                                    $headName = $s3result; // S3に保存されたファイルのパスを使用
+                                    $currentHeadPath = getUserData($pdo, $userid)["headname"];
+                                }
                             }
                         } else {
-                            if (check_mime($uploadedFile['tmp_name']) == "image/webp") {
-                                $newFilename = createUniqId() . '-' . $userid . '.webp';
-                            } else {
-                                $newFilename = createUniqId() . '-' . $userid . '.' . $extension;
-                            }
-                            $uploadedPath = 'userheads/' . $newFilename;
-                            $result = rename($uploadedFile['tmp_name'], __DIR__ . '/../../../' . $uploadedPath);
-
-                            if ($result) {
-                                $headName = $uploadedPath; // 保存されたファイルのパスを使用
-                                $currentHeadPath = getUserData($pdo, $userid)["headname"];
-                            } else {
-                                $errnum = $uploadedFile['error'];
-                                $errcode = "ERROR";
-
-                                switch ($errnum) {
-                                    case 1:
-                                        $errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";
-                                        break;
-                                    case 2:
-                                        $errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";
-                                        break;
-                                    case 3:
-                                        $errcode = "FILE_SUKOSHIDAKE_UPLOAD";
-                                        break;
-                                    case 4:
-                                        $errcode = "FILE_UPLOAD_DEKINAKATTA";
-                                        break;
-                                    case 6:
-                                        $errcode = "TMP_FOLDER_NAI";
-                                        break;
-                                    case 7:
-                                        $errcode = "FILE_KAKIKOMI_SIPPAI";
-                                        break;
-                                    case 8:
-                                        $errcode = "PHPINFO()_KAKUNIN";
-                                        break;
-                                    case 0:
-                                        // 成功だったのに move_uploaded_file() が失敗した
-                                        if (!is_uploaded_file($uploadedFile['tmp_name'])) {
-                                            $errcode = "TMP_FILE_NAI";
-                                        } elseif (!is_writable(__DIR__ . '/../../../usericons/')) {
-                                            $errcode = "SAVE_FOLDER_KAKIKOMI_KENNAI";
-                                        } else {
-                                            $errcode = "MOVE_UPLOAD_FILE_SIPPAI";
-                                        }
-                                        break;
-                                    }
-                                $error_message[] = 'アップロード失敗！(2)エラーコード：' . $errcode . '';
-                            }
+                            $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
                         }
-                        if (isset($s3result)) {
-                            if ($s3result == false) {
-                                $error_message[] = 'アップロード失敗！(2)エラーコード： S3ERROR';
-                            } else {
-                                $headName = $s3result; // S3に保存されたファイルのパスを使用
-                                $currentHeadPath = getUserData($pdo, $userid)["headname"];
-                            }
-                        }
-                    } else {
-                        $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
+                    }else{
+                        $error_message[] = 'アップロード失敗！(2)エラーコード：' .$beforeUploadError.'';
                     }
                 }
             }
diff --git a/api/ueuse/create.php b/api/ueuse/create.php
index 69ff998..8ea436f 100644
--- a/api/ueuse/create.php
+++ b/api/ueuse/create.php
@@ -117,69 +117,117 @@ if(isset($_GET['token']) || (!(empty($Get_Post_Json)))) {
             }
             
             if(!(empty($post_json["image1"]))){
-                $imageData = base64_decode($post_json["image1"],true);
-            
-                $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_'.createUniqId());
-                file_put_contents($tmpFilePath, $imageData);
-            
-                $Img1Files = [
-                    'name' => 'upload.png',
-                    'type' => check_mime($tmpFilePath),
-                    'tmp_name' => $tmpFilePath,
-                    'error' => UPLOAD_ERR_OK,
-                    'size' => strlen($imageData),
-                ];
+                $imageBase64 = $post_json["image1"];
+
+                if (strpos($imageBase64, ',') !== false) {
+                    $imageBase64 = explode(',', $imageBase64)[1];
+                }
+
+                $imageData = base64_decode($imageBase64, true);
+
+                if ($imageData === false) {
+                    $error_message[] = 'Base64のデコードに失敗しました！(base64_decode_failed)';
+                } else {
+                    $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
+                    file_put_contents($tmpFilePath, $imageData);
+
+                    clearstatcache(true, $tmpFilePath);
+
+                    $Img1Files = [
+                        'name' => 'upload.png',
+                        'type' => check_mime($tmpFilePath),
+                        'tmp_name' => $tmpFilePath,
+                        'error' => UPLOAD_ERR_OK,
+                        'size' => filesize($tmpFilePath),
+                    ];
+                }
             } else {
                 $Img1Files = array();
             }
 
             if(!(empty($post_json["image2"]))){
-                $imageData = base64_decode($post_json["image2"],true);
-            
-                $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_'.createUniqId());
-                file_put_contents($tmpFilePath, $imageData);
-            
-                $Img2Files = [
-                    'name' => 'upload.png',
-                    'type' => check_mime($tmpFilePath),
-                    'tmp_name' => $tmpFilePath,
-                    'error' => UPLOAD_ERR_OK,
-                    'size' => strlen($imageData),
-                ];
+                $imageBase64 = $post_json["image2"];
+
+                if (strpos($imageBase64, ',') !== false) {
+                    $imageBase64 = explode(',', $imageBase64)[1];
+                }
+
+                $imageData = base64_decode($imageBase64, true);
+
+                if ($imageData === false) {
+                    $error_message[] = 'Base64のデコードに失敗しました！(base64_decode_failed)';
+                } else {
+                    $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
+                    file_put_contents($tmpFilePath, $imageData);
+
+                    clearstatcache(true, $tmpFilePath);
+
+                    $Img2Files = [
+                        'name' => 'upload.png',
+                        'type' => check_mime($tmpFilePath),
+                        'tmp_name' => $tmpFilePath,
+                        'error' => UPLOAD_ERR_OK,
+                        'size' => filesize($tmpFilePath),
+                    ];
+                }
             } else {
                 $Img2Files = array();
             }
 
             if(!(empty($post_json["image3"]))){
-                $imageData = base64_decode($post_json["image3"],true);
-            
-                $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_'.createUniqId());
-                file_put_contents($tmpFilePath, $imageData);
-            
-                $Img3Files = [
-                    'name' => 'upload.png',
-                    'type' => check_mime($tmpFilePath),
-                    'tmp_name' => $tmpFilePath,
-                    'error' => UPLOAD_ERR_OK,
-                    'size' => strlen($imageData),
-                ];
+                $imageBase64 = $post_json["image3"];
+
+                if (strpos($imageBase64, ',') !== false) {
+                    $imageBase64 = explode(',', $imageBase64)[1];
+                }
+
+                $imageData = base64_decode($imageBase64, true);
+
+                if ($imageData === false) {
+                    $error_message[] = 'Base64のデコードに失敗しました！(base64_decode_failed)';
+                } else {
+                    $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
+                    file_put_contents($tmpFilePath, $imageData);
+
+                    clearstatcache(true, $tmpFilePath);
+
+                    $Img3Files = [
+                        'name' => 'upload.png',
+                        'type' => check_mime($tmpFilePath),
+                        'tmp_name' => $tmpFilePath,
+                        'error' => UPLOAD_ERR_OK,
+                        'size' => filesize($tmpFilePath),
+                    ];
+                }
             } else {
                 $Img3Files = array();
             }
 
             if(!(empty($post_json["image4"]))){
-                $imageData = base64_decode($post_json["image4"],true);
-            
-                $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_'.createUniqId());
-                file_put_contents($tmpFilePath, $imageData);
-            
-                $Img4Files = [
-                    'name' => 'upload.png',
-                    'type' => check_mime($tmpFilePath),
-                    'tmp_name' => $tmpFilePath,
-                    'error' => UPLOAD_ERR_OK,
-                    'size' => strlen($imageData),
-                ];
+                $imageBase64 = $post_json["image4"];
+
+                if (strpos($imageBase64, ',') !== false) {
+                    $imageBase64 = explode(',', $imageBase64)[1];
+                }
+
+                $imageData = base64_decode($imageBase64, true);
+
+                if ($imageData === false) {
+                    $error_message[] = 'Base64のデコードに失敗しました！(base64_decode_failed)';
+                } else {
+                    $tmpFilePath = tempnam(sys_get_temp_dir(), 'upload_' . createUniqId());
+                    file_put_contents($tmpFilePath, $imageData);
+
+                    clearstatcache(true, $tmpFilePath);
+
+                    $Img4Files = [
+                        'name' => 'upload.png',
+                        'type' => check_mime($tmpFilePath),
+                        'tmp_name' => $tmpFilePath,
+                        'error' => UPLOAD_ERR_OK,
+                        'size' => filesize($tmpFilePath),
+                    ];
+                }
             } else {
                 $Img4Files = array();
             }
@@ -193,8 +241,18 @@ if(isset($_GET['token']) || (!(empty($Get_Post_Json)))) {
 
             $video1 = array();
 
-            $ueuse_result = send_ueuse($userData["userid"],$replyid,$reuseid,$ueuse,$Img1Files,$Img2Files,$Img3Files,$Img4Files,$video1,$nsfw,$isAIBWM, "../");
-
+            if(empty($error_message)){
+                $ueuse_result = send_ueuse($userData["userid"],$replyid,$reuseid,$ueuse,$Img1Files,$Img2Files,$Img3Files,$Img4Files,$video1,$nsfw,$isAIBWM, "../");
+            }else{
+                $err = $error_message;
+                $response = array(
+                    'error_code' => $err,
+                    'success' => false
+                );
+                
+                echo json_encode($response, JSON_UNESCAPED_UNICODE);
+                exit;
+            }
 
             if($ueuse_result[0] == true){
                 $response = array(
diff --git a/bookmark/bookmark.php b/bookmark/bookmark.php
index efdcb8c..185890e 100644
--- a/bookmark/bookmark.php
+++ b/bookmark/bookmark.php
@@ -14,27 +14,19 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['userid'])) && sa
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
+        }
 
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-        // データベース接続の設定
-        $dbh = new PDO('mysql:charset=utf8mb4;dbname='.DB_NAME.';host='.DB_HOST, DB_USER, DB_PASS, array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
-            PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true,
-        ));
-
-        $query = $dbh->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
+        $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
 
         $query->execute(array(':userid' => $userId));
 
@@ -99,6 +91,11 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['userid'])) && sa
                 exit;
             }
         }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
+    }
+
     } else {
         echo json_encode(['success' => false, 'error' => '必要なパラメータが提供されていません。']);
         exit;
diff --git a/css/home.css b/css/home.css
index f8abb51..77cebd7 100644
--- a/css/home.css
+++ b/css/home.css
@@ -1395,6 +1395,19 @@ main h1 {
     font-weight: bold;
 }
 
+.ueuse .chotto_small {
+    line-height: 16px;
+    overflow-wrap: break-word;
+    margin-top: auto;
+    margin-bottom: auto;
+    margin-left: 0px;
+    font-size: 12px;
+    color: var(--text-color);
+    text-decoration: none;
+    font-family: var(--Text-fonts), sans-serif;
+    font-weight: normal;
+}
+
 .ueuse p img {
     margin-top: auto;
     margin-bottom: auto;
@@ -4700,6 +4713,48 @@ label>input {
     opacity: 1;
 }
 
+.notification .codeblock {
+    width: calc(100% - 12px);
+    margin-left: 0px;
+    margin-right: 0px;
+    padding-left: 6px;
+    padding-right: 6px;
+    padding-top: 3px;
+    padding-bottom: 3px;
+    background-color: #DDDDDD;
+    color: #323232;
+    border-radius: 5px;
+    font-size: calc(100% - 2px);
+    text-decoration: none;
+    font-family: var(--Mono-fonts), sans-serif;
+    font-weight: bold;
+    vertical-align: top;
+}
+
+.notification .codeblock code {
+    white-space: pre-wrap;
+    word-break: break-word;
+}
+
+.notification .unixtime {
+    width: fit-content;
+    margin-left: 4px;
+    margin-right: 4px;
+    padding-left: 6px;
+    padding-right: 6px;
+    padding-top: 3px;
+    padding-bottom: 3px;
+    background-color: #F5F5F5;
+    border: solid 1px #CCC;
+    color: #323232;
+    border-radius: 25px;
+    font-size: calc(100% - 2px);
+    text-decoration: none;
+    font-family: var(--Mono-fonts), sans-serif;
+    font-weight: bold;
+    vertical-align: top;
+}
+
 .notification h1 {
     overflow-wrap: break-word;
     margin-top: auto;
@@ -4791,6 +4846,19 @@ label>input {
     font-weight: bold;
 }
 
+.notification .chotto_small {
+    line-height: 16px;
+    overflow-wrap: break-word;
+    margin-top: auto;
+    margin-bottom: auto;
+    margin-left: 0px;
+    font-size: 12px;
+    color: var(--text-color);
+    text-decoration: none;
+    font-family: var(--Text-fonts), sans-serif;
+    font-weight: normal;
+}
+
 .notification p img {
     margin-top: auto;
     margin-bottom: auto;
@@ -8410,11 +8478,11 @@ noscript .noscript_modal .inner .center_text p {
     }
 
     .ueuse p {
-        color: var(--background-color);
+        color: var(--dark-text-color);
     }
 
     .ru a p {
-        color: var(--background-color);
+        color: var(--dark-text-color);
     }
 
     .ueuse .inline {
@@ -8444,25 +8512,29 @@ noscript .noscript_modal .inner .center_text p {
 
 
     .ueuse h1 {
-        color: var(--background-color);
+        color: var(--dark-text-color);
     }
 
     .ueuse h2 {
-        color: var(--background-color);
+        color: var(--dark-text-color);
     }
 
     .ueuse h3 {
-        color: var(--background-color);
+        color: var(--dark-text-color);
     }
 
     .ueuse center {
-        color: var(--background-color);
+        color: var(--dark-text-color);
     }
 
     .ueuse a {
         color: var(--main-color);
     }
 
+    .ueuse .chotto_small {
+        color: var(--dark-text-color);
+    }
+
     .ueuse .flebox .time {
         color: var(--dark-subtext-color);
     }
@@ -9188,21 +9260,8 @@ noscript .noscript_modal .inner .center_text p {
     }
 
     .notification .inline {
-        width: fit-content;
-        margin-left: 4px;
-        margin-right: 4px;
-        padding-left: 6px;
-        padding-right: 6px;
-        padding-top: 3px;
-        padding-bottom: 3px;
-        background-color: #DDDDDD;
-        color: #323232;
-        border-radius: 5px;
-        font-size: calc(100% - 2px);
-        text-decoration: none;
-        font-family: var(--Mono-fonts), sans-serif;
-        font-weight: bold;
-        vertical-align: top;
+        background-color: #323232;
+        color: #F5F5F5;
     }
 
     .notification h1 {
@@ -9263,6 +9322,16 @@ noscript .noscript_modal .inner .center_text p {
         color: var(--main-color);
     }
 
+    .notification .chotto_small {
+        color: var(--dark-text-color);
+    }
+
+    .notification .unixtime {
+        background-color: #323232;
+        border: solid 1px #CCC;
+        color: #F5F5F5;
+    }
+
     .tokonone p {
         color: var(--dark-subtext-color);
     }
diff --git a/delete/delete.php b/delete/delete.php
index 940bce4..fd10056 100644
--- a/delete/delete.php
+++ b/delete/delete.php
@@ -14,15 +14,17 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['userid'])) && sa
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
-
-    
-    $result = delete_ueuse($postUniqid, $postUserid, $loginid);
-    if($result[0] === true){
-        echo json_encode(['success' => true]);
-        exit;
+    }elseif(is_sameUserid($postUserid, $is_login["userid"]) === true){
+        $result = delete_ueuse($postUniqid, $postUserid, $loginid);
+        if($result[0] === true){
+            echo json_encode(['success' => true]);
+            exit;
+        }else{
+            echo json_encode(['success' => false, 'error' => '削除に失敗しました。']);
+            exit;
+        }
     }else{
-        echo json_encode(['success' => false, 'error' => '削除に失敗しました。']);
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
     }
 }else{
diff --git a/favorite/favorite.php b/favorite/favorite.php
index a00085c..6d57404 100644
--- a/favorite/favorite.php
+++ b/favorite/favorite.php
@@ -14,18 +14,17 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['userid'])) && sa
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
-
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
+        }
 
         // データベース接続の設定
         $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
@@ -45,8 +44,12 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['userid'])) && sa
                 exit;
             }
         }
-    } else {
-        echo json_encode(['success' => false, 'error' => '必要なパラメータが提供されていません。']);
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
     }
+} else {
+    echo json_encode(['success' => false, 'error' => '必要なパラメータが提供されていません。']);
+    exit;
+}
 ?>
diff --git a/function/delete_apitoken.php b/function/delete_apitoken.php
index c7d8ac6..d7e195b 100644
--- a/function/delete_apitoken.php
+++ b/function/delete_apitoken.php
@@ -26,13 +26,16 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['userid'])) && sa
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
-
-    if(DelAPIToken($pdo, $uniqid)){
-        echo json_encode(['success' => true, 'message' => 'アクセストークンが削除されました。']);
-        exit;
-    } else {
-        echo json_encode(['success' => false, 'error' => 'アクセストークンの削除に失敗しました。']);
+    }elseif(is_sameUserid($userid, $is_login["userid"]) === true){
+        if(DelAPIToken($pdo, $uniqid)){
+            echo json_encode(['success' => true, 'message' => 'アクセストークンが削除されました。']);
+            exit;
+        } else {
+            echo json_encode(['success' => false, 'error' => 'アクセストークンの削除に失敗しました。']);
+            exit;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
     }
 } else {
diff --git a/function/function.php b/function/function.php
index c7e9dc6..9fb5640 100644
--- a/function/function.php
+++ b/function/function.php
@@ -320,12 +320,14 @@ function uwuzuUserLoginCheck($loginid, $loginkey, $operation_permission = "user"
             if(hash_equals($loginkey, $userLoginKey)){
                 if($operation_permission == "admin"){
                     if($loginResponse["admin"] == "yes"){
-                        $is_login = true;
+                        // true
+                        $is_login = $loginResponse;
                     }else{
                         $is_login = false;
                     }
                 }else{
-                    $is_login = true;
+                    // true
+                    $is_login = $loginResponse;
                 }
             }else{
                 $is_login = false;
@@ -339,6 +341,9 @@ function uwuzuUserLoginCheck($loginid, $loginkey, $operation_permission = "user"
         return false;
     }
 }
+function is_sameUserid($userid_a, $userid_b){
+    return strtolower($userid_a) == strtolower($userid_b);
+}
 //---------UNIQID-MAKER---------
 function Legacy_createUniqId(){ 
     list($msec, $sec) = explode(" ", microtime()); 
@@ -424,6 +429,51 @@ function delete_exif($extension, $path){
 }
 //----------EXIF_Delete----------
 //----------Check_Extension------
+// アップロードエラーチェッカー
+function check_upload_error($uploadedFile, $saveFolder){
+    $saveFolder = realpath($saveFolder);
+    $errcode = null;
+    $errnum = $uploadedFile["error"];
+    switch ($errnum) {
+        case 1:
+            $errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";
+            break;
+        case 2:
+            $errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";
+            break;
+        case 3:
+            $errcode = "FILE_SUKOSHIDAKE_UPLOAD";
+            break;
+        case 4:
+            $errcode = "FILE_UPLOAD_DEKINAKATTA";
+            break;
+        case 6:
+            $errcode = "TMP_FOLDER_NAI";
+            break;
+        case 7:
+            $errcode = "FILE_KAKIKOMI_SIPPAI";
+            break;
+        case 8:
+            $errcode = "PHPINFO()_KAKUNIN";
+            break;
+        case 0:
+            if(empty($uploadedFile['name'])){
+                $errcode = "FILE_NAME_NAI";
+            }elseif(empty($uploadedFile['size']) || $uploadedFile['size'] == 0){
+                $errcode = "FILE_SIZE_NAI";
+            }else{
+                if (!file_exists($uploadedFile['tmp_name'])) {
+                    $errcode = "TMP_FILE_NAI";
+                } elseif (!is_writable($saveFolder)) {
+                    $errcode = "SAVE_FOLDER_KAKIKOMI_KENNAI";
+                } else {
+                    $errcode = null;
+                }
+            }
+            break;
+        }
+    return $errcode;
+}
 //ファイル形式チェック(画像かどうか)
 function check_mime($tmp_name){
     $finfo = new finfo();
@@ -1450,56 +1500,53 @@ function send_ueuse($userid,$rpUniqid,$ruUniqid,$ueuse,$photo1,$photo2,$photo3,$
                     } else {
                         // アップロードされたファイル情報
                         $uploadedFile = $photo1;
+                        $beforeUploadError = check_upload_error($uploadedFile,  __DIR__."/../ueuseimages/");
+                        if($beforeUploadError === null){
+                            if(!(empty($uploadedFile['tmp_name']))){
+                                if(check_mime($uploadedFile['tmp_name'])){
+                                    // アップロードされたファイルの拡張子を取得
+                                    $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
+                                    delete_exif($extension, $uploadedFile['tmp_name']);
+                                    resizeImage($uploadedFile['tmp_name'], 8192, 8192);
 
-                        if(!(empty($uploadedFile['tmp_name']))){
-                            if(check_mime($uploadedFile['tmp_name'])){
-                                // アップロードされたファイルの拡張子を取得
-                                $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
-                                delete_exif($extension, $uploadedFile['tmp_name']);
-                                resizeImage($uploadedFile['tmp_name'], 8192, 8192);
-
-                                if($aibwm === true){
-                                    AIBlockWaterMark($uploadedFile['tmp_name'], $userid);
-                                }
-                                if(AMS3_CHKS == "true"){
-                                    $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
-                                }else{
-                                    if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
-                                        $extension = 'webp';
+                                    if($aibwm === true){
+                                        AIBlockWaterMark($uploadedFile['tmp_name'], $userid);
                                     }
-                                    // 新しいファイル名を生成（uniqid + 拡張子）
-                                    $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
-                                    // 保存先のパスを生成
-                                    $uploadedPath = '../ueuseimages/' . $newFilename;
-                                    // ファイルを移動
-                                    $result = move_uploaded_file($uploadedFile['tmp_name'], __DIR__."/".$uploadedPath);
-                                    
-                                    if ($result) {
-                                        $save_photo1 = $uploadedPath; // 保存されたファイルのパスを使用
-                                    } else {
-                                        $errnum = $uploadedFile['error'];
-                                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                                        $error_message[] = 'アップロード失敗！(1)エラーコード：' .$errcode.'';
-                                    }
-                                }
-                                if(isset($s3result)){
-                                    if($s3result == false){
-                                        $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
+                                    if(AMS3_CHKS == "true"){
+                                        $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
                                     }else{
-                                        $save_photo1 = $s3result; // S3に保存されたファイルのパスを使用
+                                        if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
+                                            $extension = 'webp';
+                                        }
+                                        // 新しいファイル名を生成（uniqid + 拡張子）
+                                        $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
+                                        // 保存先のパスを生成
+                                        $uploadedPath = '../ueuseimages/' . $newFilename;
+                                        // ファイルを移動
+                                        $result = rename($uploadedFile['tmp_name'], __DIR__."/".$uploadedPath);
+                                        
+                                        if ($result) {
+                                            $save_photo1 = $uploadedPath; // 保存されたファイルのパスを使用
+                                        } else {
+                                            $beforeUploadError = check_upload_error($uploadedFile, __DIR__."/../ueuseimages/") ?? "ERROR";
+                                            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
+                                        }
                                     }
+                                    if(isset($s3result)){
+                                        if($s3result == false){
+                                            $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
+                                        }else{
+                                            $save_photo1 = $s3result; // S3に保存されたファイルのパスを使用
+                                        }
+                                    }
+                                }else{
+                                    $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
                                 }
                             }else{
-                                $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
+                                $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
                             }
                         }else{
-                            $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
+                            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
                         }
                     }
 
@@ -1511,54 +1558,51 @@ function send_ueuse($userid,$rpUniqid,$ruUniqid,$ueuse,$photo1,$photo2,$photo3,$
                         }
                         // アップロードされたファイル情報
                         $uploadedFile2 = $photo2;
-
-                        if(!(empty($uploadedFile2['tmp_name']))){
-                            if(check_mime($uploadedFile2['tmp_name'])){
-                                // アップロードされたファイルの拡張子を取得
-                                $extension2 = convert_mime(check_mime($uploadedFile2['tmp_name']));
-                                delete_exif($extension2, $uploadedFile2['tmp_name']);
-                                resizeImage($uploadedFile2['tmp_name'], 8192, 8192);
-                                if($aibwm === true){
-                                    AIBlockWaterMark($uploadedFile2['tmp_name'], $userid);
-                                }
-                                if(AMS3_CHKS == "true"){
-                                    $s3result = uploadAmazonS3($uploadedFile2['tmp_name']);
-                                }else{
-                                    if(check_mime($uploadedFile2['tmp_name']) == "image/webp"){
-                                        $extension2 = 'webp';
+                        $beforeUploadError = check_upload_error($uploadedFile2,  __DIR__."/../ueuseimages/");
+                        if($beforeUploadError === null){
+                            if(!(empty($uploadedFile2['tmp_name']))){
+                                if(check_mime($uploadedFile2['tmp_name'])){
+                                    // アップロードされたファイルの拡張子を取得
+                                    $extension2 = convert_mime(check_mime($uploadedFile2['tmp_name']));
+                                    delete_exif($extension2, $uploadedFile2['tmp_name']);
+                                    resizeImage($uploadedFile2['tmp_name'], 8192, 8192);
+                                    if($aibwm === true){
+                                        AIBlockWaterMark($uploadedFile2['tmp_name'], $userid);
                                     }
-                                    // 新しいファイル名を生成（uniqid + 拡張子）
-                                    $newFilename2 = createUniqId() . '-'.$userid.'.' . $extension2;
-                                    // 保存先のパスを生成
-                                    $uploadedPath2 = '../ueuseimages/' . $newFilename2;
-                                    // ファイルを移動
-                                    $result2 = move_uploaded_file($uploadedFile2['tmp_name'], __DIR__."/".$uploadedPath2);
-                                    if ($result2) {
-                                        $save_photo2 = $uploadedPath2; // 保存されたファイルのパスを使用
-                                    } else {
-                                        $errnum = $uploadedFile2['error'];
-                                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                                        $error_message[] = 'アップロード失敗！(2)エラーコード：' .$errcode.'';
-                                    }
-                                }
-                                if(isset($s3result)){
-                                    if($s3result == false){
-                                        $error_message[] = 'アップロード失敗！(2)エラーコード： S3ERROR';
+                                    if(AMS3_CHKS == "true"){
+                                        $s3result = uploadAmazonS3($uploadedFile2['tmp_name']);
                                     }else{
-                                        $save_photo2 = $s3result; // S3に保存されたファイルのパスを使用
+                                        if(check_mime($uploadedFile2['tmp_name']) == "image/webp"){
+                                            $extension2 = 'webp';
+                                        }
+                                        // 新しいファイル名を生成（uniqid + 拡張子）
+                                        $newFilename2 = createUniqId() . '-'.$userid.'.' . $extension2;
+                                        // 保存先のパスを生成
+                                        $uploadedPath2 = '../ueuseimages/' . $newFilename2;
+                                        // ファイルを移動
+                                        $result2 = rename($uploadedFile2['tmp_name'], __DIR__."/".$uploadedPath2);
+                                        if ($result2) {
+                                            $save_photo2 = $uploadedPath2; // 保存されたファイルのパスを使用
+                                        } else {
+                                            $beforeUploadError = check_upload_error($uploadedFile2, __DIR__."/../ueuseimages/") ?? "ERROR";
+                                            $error_message[] = 'アップロード失敗！(2)エラーコード：' .$beforeUploadError.'';
+                                        }
                                     }
+                                    if(isset($s3result)){
+                                        if($s3result == false){
+                                            $error_message[] = 'アップロード失敗！(2)エラーコード： S3ERROR';
+                                        }else{
+                                            $save_photo2 = $s3result; // S3に保存されたファイルのパスを使用
+                                        }
+                                    }
+                                }else{
+                                    $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
                                 }
                             }else{
-                                $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
+                                $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
                             }
                         }else{
-                            $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
+                            $error_message[] = 'アップロード失敗！(2)エラーコード：' .$beforeUploadError.'';
                         }
                     }
 
@@ -1570,54 +1614,51 @@ function send_ueuse($userid,$rpUniqid,$ruUniqid,$ueuse,$photo1,$photo2,$photo3,$
                         }
                         // アップロードされたファイル情報
                         $uploadedFile3 = $photo3;
-
-                        if(!(empty($uploadedFile3['tmp_name']))){
-                            if(check_mime($uploadedFile3['tmp_name'])){
-                                // アップロードされたファイルの拡張子を取得
-                                $extension3 = convert_mime(check_mime($uploadedFile3['tmp_name']));
-                                delete_exif($extension3, $uploadedFile3['tmp_name']);
-                                resizeImage($uploadedFile3['tmp_name'], 8192, 8192);
-                                if($aibwm === true){
-                                    AIBlockWaterMark($uploadedFile3['tmp_name'], $userid);
-                                }
-                                if(AMS3_CHKS == "true"){
-                                    $s3result = uploadAmazonS3($uploadedFile3['tmp_name']);
-                                }else{
-                                    if(check_mime($uploadedFile3['tmp_name']) == "image/webp"){
-                                        $extension3 = 'webp';
+                        $beforeUploadError = check_upload_error($uploadedFile3,  __DIR__."/../ueuseimages/");
+                        if($beforeUploadError === null){
+                            if(!(empty($uploadedFile3['tmp_name']))){
+                                if(check_mime($uploadedFile3['tmp_name'])){
+                                    // アップロードされたファイルの拡張子を取得
+                                    $extension3 = convert_mime(check_mime($uploadedFile3['tmp_name']));
+                                    delete_exif($extension3, $uploadedFile3['tmp_name']);
+                                    resizeImage($uploadedFile3['tmp_name'], 8192, 8192);
+                                    if($aibwm === true){
+                                        AIBlockWaterMark($uploadedFile3['tmp_name'], $userid);
                                     }
-                                    // 新しいファイル名を生成（uniqid + 拡張子）
-                                    $newFilename3 = createUniqId() . '-'.$userid.'.' . $extension3;
-                                    // 保存先のパスを生成
-                                    $uploadedPath3 = '../ueuseimages/' . $newFilename3;
-                                    // ファイルを移動
-                                    $result3 = move_uploaded_file($uploadedFile3['tmp_name'], __DIR__."/".$uploadedPath3);
-                                    if ($result3) {
-                                        $save_photo3 = $uploadedPath3; // 保存されたファイルのパスを使用
-                                    } else {
-                                        $errnum = $uploadedFile3['error'];
-                                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                                        $error_message[] = 'アップロード失敗！(3)エラーコード：' .$errcode.'';
-                                    }
-                                }
-                                if(isset($s3result)){
-                                    if($s3result == false){
-                                        $error_message[] = 'アップロード失敗！(3)エラーコード： S3ERROR';
+                                    if(AMS3_CHKS == "true"){
+                                        $s3result = uploadAmazonS3($uploadedFile3['tmp_name']);
                                     }else{
-                                        $save_photo3 = $s3result; // S3に保存されたファイルのパスを使用
+                                        if(check_mime($uploadedFile3['tmp_name']) == "image/webp"){
+                                            $extension3 = 'webp';
+                                        }
+                                        // 新しいファイル名を生成（uniqid + 拡張子）
+                                        $newFilename3 = createUniqId() . '-'.$userid.'.' . $extension3;
+                                        // 保存先のパスを生成
+                                        $uploadedPath3 = '../ueuseimages/' . $newFilename3;
+                                        // ファイルを移動
+                                        $result3 = rename($uploadedFile3['tmp_name'], __DIR__."/".$uploadedPath3);
+                                        if ($result3) {
+                                            $save_photo3 = $uploadedPath3; // 保存されたファイルのパスを使用
+                                        } else {
+                                            $beforeUploadError = check_upload_error($uploadedFile3, __DIR__."/../ueuseimages/") ?? "ERROR";
+                                            $error_message[] = 'アップロード失敗！(3)エラーコード：' .$beforeUploadError.'';
+                                        }
                                     }
+                                    if(isset($s3result)){
+                                        if($s3result == false){
+                                            $error_message[] = 'アップロード失敗！(3)エラーコード： S3ERROR';
+                                        }else{
+                                            $save_photo3 = $s3result; // S3に保存されたファイルのパスを使用
+                                        }
+                                    }
+                                }else{
+                                    $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
                                 }
                             }else{
-                                $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
+                                $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
                             }
                         }else{
-                            $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
+                            $error_message[] = 'アップロード失敗！(3)エラーコード：' .$beforeUploadError.'';
                         }
                     }
 
@@ -1629,53 +1670,51 @@ function send_ueuse($userid,$rpUniqid,$ruUniqid,$ueuse,$photo1,$photo2,$photo3,$
                         }
                         // アップロードされたファイル情報
                         $uploadedFile4 = $photo4;
-                        if(!(empty($uploadedFile4['tmp_name']))){
-                            if(check_mime($uploadedFile4['tmp_name'])){
-                                // アップロードされたファイルの拡張子を取得
-                                $extension4 = convert_mime(check_mime($uploadedFile4['tmp_name']));
-                                delete_exif($extension4, $uploadedFile4['tmp_name']);
-                                resizeImage($uploadedFile4['tmp_name'], 8192, 8192);
-                                if($aibwm === true){
-                                    AIBlockWaterMark($uploadedFile4['tmp_name'], $userid);
-                                }
-                                if(AMS3_CHKS == "true"){
-                                    $s3result = uploadAmazonS3($uploadedFile4['tmp_name']);
-                                }else{
-                                    if(check_mime($uploadedFile4['tmp_name']) == "image/webp"){
-                                        $extension4 = 'webp';
+                        $beforeUploadError = check_upload_error($uploadedFile4,  __DIR__."/../ueuseimages/");
+                        if($beforeUploadError === null){
+                            if(!(empty($uploadedFile4['tmp_name']))){
+                                if(check_mime($uploadedFile4['tmp_name'])){
+                                    // アップロードされたファイルの拡張子を取得
+                                    $extension4 = convert_mime(check_mime($uploadedFile4['tmp_name']));
+                                    delete_exif($extension4, $uploadedFile4['tmp_name']);
+                                    resizeImage($uploadedFile4['tmp_name'], 8192, 8192);
+                                    if($aibwm === true){
+                                        AIBlockWaterMark($uploadedFile4['tmp_name'], $userid);
                                     }
-                                    // 新しいファイル名を生成（uniqid + 拡張子）
-                                    $newFilename4 = createUniqId() . '-'.$userid.'.' . $extension4;
-                                    // 保存先のパスを生成
-                                    $uploadedPath4 = '../ueuseimages/' . $newFilename4;
-                                    // ファイルを移動
-                                    $result4 = move_uploaded_file($uploadedFile4['tmp_name'], __DIR__."/".$uploadedPath4);  
-                                    if ($result4) {
-                                        $save_photo4 = $uploadedPath4; // 保存されたファイルのパスを使用
-                                    } else {
-                                        $errnum = $uploadedFile4['error'];
-                                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                                        $error_message[] = 'アップロード失敗！(4)エラーコード：' .$errcode.'';
-                                    }
-                                }
-                                if(isset($s3result)){
-                                    if($s3result == false){
-                                        $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
+                                    if(AMS3_CHKS == "true"){
+                                        $s3result = uploadAmazonS3($uploadedFile4['tmp_name']);
                                     }else{
-                                        $save_photo4 = $s3result; // S3に保存されたファイルのパスを使用
+                                        if(check_mime($uploadedFile4['tmp_name']) == "image/webp"){
+                                            $extension4 = 'webp';
+                                        }
+                                        // 新しいファイル名を生成（uniqid + 拡張子）
+                                        $newFilename4 = createUniqId() . '-'.$userid.'.' . $extension4;
+                                        // 保存先のパスを生成
+                                        $uploadedPath4 = '../ueuseimages/' . $newFilename4;
+                                        // ファイルを移動
+                                        $result4 = rename($uploadedFile4['tmp_name'], __DIR__."/".$uploadedPath4);  
+                                        if ($result4) {
+                                            $save_photo4 = $uploadedPath4; // 保存されたファイルのパスを使用
+                                        } else {
+                                            $beforeUploadError = check_upload_error($uploadedFile4, __DIR__."/../ueuseimages/") ?? "ERROR";
+                                            $error_message[] = 'アップロード失敗！(3)エラーコード：' .$beforeUploadError.'';
+                                        }
                                     }
+                                    if(isset($s3result)){
+                                        if($s3result == false){
+                                            $error_message[] = 'アップロード失敗！(4)エラーコード： S3ERROR';
+                                        }else{
+                                            $save_photo4 = $s3result; // S3に保存されたファイルのパスを使用
+                                        }
+                                    }
+                                }else{
+                                    $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
                                 }
                             }else{
-                                $error_message[] = "使用できない画像形式です。(SORRY_FILE_HITAIOU)";
+                                $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
                             }
                         }else{
-                            $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
+                            $error_message[] = 'アップロード失敗！(4)エラーコード：' .$beforeUploadError.'';
                         }
                     }
 
@@ -1684,46 +1723,43 @@ function send_ueuse($userid,$rpUniqid,$ruUniqid,$ueuse,$photo1,$photo2,$photo3,$
                     } else {
                         // アップロードされたファイル情報
                         $uploadedVideo = $video1;
-
-                        if(!(empty($uploadedVideo['tmp_name']))){
-                            if(check_mime_video($uploadedVideo['tmp_name'])){
-                                if(AMS3_CHKS == "true"){
-                                    $s3result = uploadAmazonS3($uploadedVideo['tmp_name']);
-                                }else{
-                                    // アップロードされたファイルの拡張子を取得
-                                    $extensionVideo = convert_mime(check_mime_video($uploadedVideo['tmp_name']));
-                                    // 正しい拡張子の場合、新しいファイル名を生成
-                                    $newFilenameVideo = createUniqId() . '-'.$userid.'.' . $extensionVideo;
-                                    // 保存先のパスを生成
-                                    $uploadedPathVideo = '../ueusevideos/' . $newFilenameVideo;
-                                    // ファイルを移動
-                                    $resultVideo = move_uploaded_file($uploadedVideo['tmp_name'], __DIR__."/".$uploadedPathVideo);
-                                    if ($resultVideo) {
-                                        $save_video1 = $uploadedPathVideo; // 保存されたファイルのパスを使用
-                                    } else {
-                                        $errnum = $uploadedVideo['error'];
-                                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                                        $error_message[] = 'アップロード失敗！(5)エラーコード：' .$errcode.'';
-                                    }
-                                }
-                                if(isset($s3result)){
-                                    if($s3result == false){
-                                        $error_message[] = 'アップロード失敗！(5)エラーコード： S3ERROR';
+                        $beforeUploadError = check_upload_error($uploadedVideo, __DIR__.'/../ueusevideos/');
+                        if($beforeUploadError === null){
+                            if(!(empty($uploadedVideo['tmp_name']))){
+                                if(check_mime_video($uploadedVideo['tmp_name'])){
+                                    if(AMS3_CHKS == "true"){
+                                        $s3result = uploadAmazonS3($uploadedVideo['tmp_name']);
                                     }else{
-                                        $save_video1 = $s3result; // S3に保存されたファイルのパスを使用
+                                        // アップロードされたファイルの拡張子を取得
+                                        $extensionVideo = convert_mime(check_mime_video($uploadedVideo['tmp_name']));
+                                        // 正しい拡張子の場合、新しいファイル名を生成
+                                        $newFilenameVideo = createUniqId() . '-'.$userid.'.' . $extensionVideo;
+                                        // 保存先のパスを生成
+                                        $uploadedPathVideo = '../ueusevideos/' . $newFilenameVideo;
+                                        // ファイルを移動
+                                        $resultVideo = rename($uploadedVideo['tmp_name'], __DIR__."/".$uploadedPathVideo);
+                                        if ($resultVideo) {
+                                            $save_video1 = $uploadedPathVideo; // 保存されたファイルのパスを使用
+                                        } else {
+                                            $beforeUploadError = check_upload_error($uploadedVideo, __DIR__."/../ueusevideos/") ?? "ERROR";
+                                            $error_message[] = 'アップロード失敗！(3)エラーコード：' .$beforeUploadError.'';
+                                        }
                                     }
+                                    if(isset($s3result)){
+                                        if($s3result == false){
+                                            $error_message[] = 'アップロード失敗！(5)エラーコード： S3ERROR';
+                                        }else{
+                                            $save_video1 = $s3result; // S3に保存されたファイルのパスを使用
+                                        }
+                                    }
+                                } else {
+                                    $error_message[] = '対応していないファイル形式です！(SORRY_FILE_HITAIOU)';
                                 }
-                            } else {
-                                $error_message[] = '対応していないファイル形式です！(SORRY_FILE_HITAIOU)';
+                            }else{
+                                $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
                             }
                         }else{
-                            $error_message[] = "ファイルがアップロードできませんでした。(FILE_UPLOAD_DEKINAKATTA)";
+                            $error_message[] = 'アップロード失敗！(5)エラーコード：' .$beforeUploadError.'';
                         }
                     }
 
@@ -3716,53 +3752,73 @@ function GetActivityPubJson($url) {
 }
 
 function GetActivityPubUser($userid, $domain) {
-    $webfingerUrl = "https://$domain/.well-known/webfinger?resource=acct:$userid@$domain";
+    if (is_not_private_url("https://".$domain."/")) {
+        $webfingerUrl = "https://$domain/.well-known/webfinger?resource=acct:$userid@$domain";
 
-    $webfingerJson = GetActivityPubJson($webfingerUrl);
+        $webfingerJson = GetActivityPubJson($webfingerUrl);
 
-    if (!$webfingerJson || empty($webfingerJson['links'])) {
-        return ['error' => 'Failed to fetch WebFinger'];
-    }
-
-    $actorUrl = null;
-    foreach ($webfingerJson['links'] as $link) {
-        if ($link['rel'] === 'self' && $link['type'] === 'application/activity+json') {
-            $actorUrl = $link['href'];
-            break;
+        if (!$webfingerJson || empty($webfingerJson['links'])) {
+            return ['error' => 'Failed to fetch WebFinger'];
         }
+
+        $actorUrl = null;
+        foreach ($webfingerJson['links'] as $link) {
+            if ($link['rel'] === 'self' && $link['type'] === 'application/activity+json') {
+                $actorUrl = $link['href'];
+                break;
+            }
+        }
+
+        if (!$actorUrl) {
+            return ['error' => 'Actor URL not found'];
+        }
+
+        $actorJson = GetActivityPubJson($actorUrl);
+        if (!$actorJson) {
+            return ['error' => 'Failed to fetch actor'];
+        }
+
+        $summaryHtml = $actorJson['summary'] ?? '';
+        $withNewlines = preg_replace('/<br\s*\/?>/i', "\n", $summaryHtml);
+        $plainText = strip_tags($withNewlines);
+
+
+        return [
+            'userid' => $actorJson['preferredUsername'] ?? null,
+            'username' => $actorJson['name'] ?? null,
+            'profile' => $plainText ?? null,
+            'id' => $actorJson['id'] ?? null,
+            'inbox' => $actorJson['inbox'] ?? null,
+            'outbox' => $actorJson['outbox'] ?? null,
+            'followers' => $actorJson['followers'] ?? null,
+            'iconname' => $actorJson['icon']['url'] ?? "../img/deficon/icon.png",
+            'headname' => $actorJson['image']['url'] ?? "../img/defhead/head.png",
+            'datetime' => $actorJson['published'] ?? null,
+            'role' => 'user',
+            'other_settings' => '{}',
+            'follow' => '',
+            'follower' => '',
+            'raw' => $actorJson
+        ];
+    }else{
+        return [
+            'userid' => null,
+            'username' => null,
+            'profile' => null,
+            'id' => null,
+            'inbox' => null,
+            'outbox' => null,
+            'followers' => null,
+            'iconname' => "../img/deficon/icon.png",
+            'headname' => "../img/defhead/head.png",
+            'datetime' => null,
+            'role' => 'user',
+            'other_settings' => '{}',
+            'follow' => '',
+            'follower' => '',
+            'raw' => ''
+        ];
     }
-
-    if (!$actorUrl) {
-        return ['error' => 'Actor URL not found'];
-    }
-
-    $actorJson = GetActivityPubJson($actorUrl);
-    if (!$actorJson) {
-        return ['error' => 'Failed to fetch actor'];
-    }
-
-    $summaryHtml = $actorJson['summary'] ?? '';
-    $withNewlines = preg_replace('/<br\s*\/?>/i', "\n", $summaryHtml);
-    $plainText = strip_tags($withNewlines);
-
-
-    return [
-        'userid' => $actorJson['preferredUsername'] ?? null,
-        'username' => $actorJson['name'] ?? null,
-        'profile' => $plainText ?? null,
-        'id' => $actorJson['id'] ?? null,
-        'inbox' => $actorJson['inbox'] ?? null,
-        'outbox' => $actorJson['outbox'] ?? null,
-        'followers' => $actorJson['followers'] ?? null,
-        'iconname' => $actorJson['icon']['url'] ?? "../img/deficon/icon.png",
-        'headname' => $actorJson['image']['url'] ?? "../img/defhead/head.png",
-        'datetime' => $actorJson['published'] ?? null,
-        'role' => 'user',
-        'other_settings' => '{}',
-        'follow' => '',
-        'follower' => '',
-        'raw' => $actorJson
-    ];
 }
 
 function FormatUeuseItem(array $value, string $myblocklist, string $mybookmark, $pdo, string $userId): ?array {
@@ -4219,5 +4275,15 @@ function sqlBlockAccountList($column, $myblocklist){
     ];
 }
 
+function is_not_private_url($url) {
+    $parts = parse_url($url);
+    if (!isset($parts['host'])) return false;
+    
+    $ip = gethostbyname($parts['host']);
+    if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false) {
+        return false; 
+    }
+    return true;
+}
 
 ?>
\ No newline at end of file
diff --git a/function/get_customemoji.php b/function/get_customemoji.php
index 170da1c..d7b5ef5 100644
--- a/function/get_customemoji.php
+++ b/function/get_customemoji.php
@@ -15,60 +15,63 @@ if (safetext(isset($_POST['emoji'])) && safetext(isset($_POST['userid'])) && saf
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        // カンマ区切りまたは1つのユーザーID文字列を処理
-        $emojis = array_unique(array_filter(explode(',', $emoji)));
-
-        $results = [];
-
-        if (count($emojis) > 0) {
-            // プレースホルダを作成
-            $placeholders = implode(',', array_fill(0, count($emojis), '?'));
-            $stmt = $pdo->prepare("SELECT emojifile, emojiname FROM emoji WHERE emojiname IN ($placeholders)");
-            $stmt->execute($emojis);
-
-            $fetched = [];
-            while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
-                $fetched[$row['emojiname']] = [
-                    'emojipath' => filter_var($row["emojifile"], FILTER_VALIDATE_URL) ? $row["emojifile"] : "../" . $row["emojifile"],
-                    'emojiname' => $row['emojiname']
-                ];
-            }
-
-            foreach ($emojis as $name) {
-                if (isset($fetched[$name])) {
-                    $results[$name] = $fetched[$name];
-                } else {
-                    $results[$name] = null;
-                }
-            }
+    }elseif(is_sameUserid($userid, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
 
-        echo json_encode([
-            "success" => true,
-            "emojis" => $results
-        ], JSON_UNESCAPED_UNICODE);
-    } else {
-        $item = array(
-            "success" => false,
-            "emojipath" => null,
-            "emojiname" => null,
-        );
-        echo json_encode($item, JSON_UNESCAPED_UNICODE);
+        if (!empty($pdo)) {
+            // カンマ区切りまたは1つのユーザーID文字列を処理
+            $emojis = array_unique(array_filter(explode(',', $emoji)));
+
+            $results = [];
+
+            if (count($emojis) > 0) {
+                // プレースホルダを作成
+                $placeholders = implode(',', array_fill(0, count($emojis), '?'));
+                $stmt = $pdo->prepare("SELECT emojifile, emojiname FROM emoji WHERE emojiname IN ($placeholders)");
+                $stmt->execute($emojis);
+
+                $fetched = [];
+                while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
+                    $fetched[$row['emojiname']] = [
+                        'emojipath' => filter_var($row["emojifile"], FILTER_VALIDATE_URL) ? $row["emojifile"] : "../" . $row["emojifile"],
+                        'emojiname' => $row['emojiname']
+                    ];
+                }
+
+                foreach ($emojis as $name) {
+                    if (isset($fetched[$name])) {
+                        $results[$name] = $fetched[$name];
+                    } else {
+                        $results[$name] = null;
+                    }
+                }
+            }
+
+            echo json_encode([
+                "success" => true,
+                "emojis" => $results
+            ], JSON_UNESCAPED_UNICODE);
+        } else {
+            $item = array(
+                "success" => false,
+                "emojipath" => null,
+                "emojiname" => null,
+            );
+            echo json_encode($item, JSON_UNESCAPED_UNICODE);
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/function/get_userid.php b/function/get_userid.php
index a468a92..c264116 100644
--- a/function/get_userid.php
+++ b/function/get_userid.php
@@ -15,55 +15,58 @@ if (safetext(isset($_POST['get_account'])) && safetext(isset($_POST['userid']))
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        // カンマ区切りまたは1つのユーザーID文字列を処理
-        $usernames = array_unique(array_filter(explode(',', $get_account)));
-        $lower_usernames = array_map('mb_strtolower', $usernames);
-
-        $results = [];
-
-        if (count($lower_usernames) > 0) {
-            $placeholders = implode(',', array_fill(0, count($lower_usernames), '?'));
-            $stmt = $pdo->prepare("SELECT userid, username FROM account WHERE LOWER(userid) IN ($placeholders)");
-            $stmt->execute($lower_usernames);
-
-            $fetched = [];
-            while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
-                $fetched[mb_strtolower($row['userid'])] = [
-                    'userid' => $row['userid'],
-                    'username' => $row['username']
-                ];
-            }
-
-            foreach ($usernames as $name) {
-                $lower = mb_strtolower($name);
-                $results[$name] = $fetched[$lower] ?? null;
-            }
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
-        
-        echo json_encode([
-            "success" => true,
-            "users" => $results
-        ], JSON_UNESCAPED_UNICODE);
-    } else {
-        echo json_encode([
-            "success" => false,
-            "users" => null
-        ], JSON_UNESCAPED_UNICODE);
+
+        if (!empty($pdo)) {
+            // カンマ区切りまたは1つのユーザーID文字列を処理
+            $usernames = array_unique(array_filter(explode(',', $get_account)));
+            $lower_usernames = array_map('mb_strtolower', $usernames);
+
+            $results = [];
+
+            if (count($lower_usernames) > 0) {
+                $placeholders = implode(',', array_fill(0, count($lower_usernames), '?'));
+                $stmt = $pdo->prepare("SELECT userid, username FROM account WHERE LOWER(userid) IN ($placeholders)");
+                $stmt->execute($lower_usernames);
+
+                $fetched = [];
+                while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) {
+                    $fetched[mb_strtolower($row['userid'])] = [
+                        'userid' => $row['userid'],
+                        'username' => $row['username']
+                    ];
+                }
+
+                foreach ($usernames as $name) {
+                    $lower = mb_strtolower($name);
+                    $results[$name] = $fetched[$lower] ?? null;
+                }
+            }
+            
+            echo json_encode([
+                "success" => true,
+                "users" => $results
+            ], JSON_UNESCAPED_UNICODE);
+        } else {
+            echo json_encode([
+                "success" => false,
+                "users" => null
+            ], JSON_UNESCAPED_UNICODE);
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/function/reuse.php b/function/reuse.php
index d78611b..0fd39aa 100644
--- a/function/reuse.php
+++ b/function/reuse.php
@@ -27,54 +27,57 @@ if (safetext(isset($_POST['uniqid'])) && safetext(isset($_POST['reusetext'])) &&
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }elseif(is_sameUserid($userid, $is_login["userid"]) === true){
+        $reusedate = date("Y-m-d H:i:s");
 
-    $reusedate = date("Y-m-d H:i:s");
+        //ユーズの情報を取得
+        $query = $pdo->prepare('SELECT * FROM ueuse WHERE uniqid = :uniqid limit 1');
+        $query->execute(array(':uniqid' => $postUniqid));
+        $result = $query->fetch();
 
-    //ユーズの情報を取得
-    $query = $pdo->prepare('SELECT * FROM ueuse WHERE uniqid = :uniqid limit 1');
-    $query->execute(array(':uniqid' => $postUniqid));
-    $result = $query->fetch();
+        //ユーザーの認証情報を取得
+        $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
+        $query->execute(array(':userid' => $userid));
+        $result2 = $query->fetch();
+        if($result2["loginid"] === $loginid){
+            if(!($result2["role"] == "ice")){
+                $nsfw_chk = "false";
+            
+                $photo1 = "";
+                $photo2 = "";
+                $photo3 = "";
+                $photo4 = "";
+                $video1 = "";
+            
+                $rpUniqid = "";
 
-    //ユーザーの認証情報を取得
-    $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
-    $query->execute(array(':userid' => $userid));
-    $result2 = $query->fetch();
-    if($result2["loginid"] === $loginid){
-        if(!($result2["role"] == "ice")){
-            $nsfw_chk = "false";
-        
-            $photo1 = "";
-            $photo2 = "";
-            $photo3 = "";
-            $photo4 = "";
-            $video1 = "";
-        
-            $rpUniqid = "";
+                $AIBWM = false;
+                if(!(empty($result["ueuse"]))){
+                    $ruUniqid = $postUniqid;
+                }else{
+                    $ruUniqid = $result["ruuniqid"];
+                }
+                $ueuse_result = send_ueuse($userid,$rpUniqid,$ruUniqid,$reusetext,$photo1,$photo2,$photo3,$photo4,$video1,$nsfw_chk,$AIBWM);
 
-            $AIBWM = false;
-            if(!(empty($result["ueuse"]))){
-                $ruUniqid = $postUniqid;
+                if($ueuse_result[0] == true){
+                    echo json_encode(['success' => true]);
+                    exit;
+                }else{
+                    echo json_encode(['success' => false, 'error' => $ueuse_result[1]]);
+                    exit;
+                }
             }else{
-                $ruUniqid = $result["ruuniqid"];
-            }
-            $ueuse_result = send_ueuse($userid,$rpUniqid,$ruUniqid,$reusetext,$photo1,$photo2,$photo3,$photo4,$video1,$nsfw_chk,$AIBWM);
-
-            if($ueuse_result[0] == true){
-                echo json_encode(['success' => true]);
-                exit;
-            }else{
-                echo json_encode(['success' => false, 'error' => $ueuse_result[1]]);
-                exit;
+                echo json_encode(['success' => false, 'error' => 'お使いのアカウントではリユーズができません。']);
+                exit; 
             }
         }else{
-            echo json_encode(['success' => false, 'error' => 'お使いのアカウントではリユーズができません。']);
-            exit; 
+            echo json_encode(['success' => false, 'error' => 'リユーズに失敗しました。']);
+            exit;
         }
     }else{
-        echo json_encode(['success' => false, 'error' => 'リユーズに失敗しました。']);
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }  
 } else {
     echo json_encode(['success' => false, 'error' => '必要なパラメータが提供されていません。']);
     exit;
diff --git a/function/settings.php b/function/settings.php
index 3f1ce9a..c07ed35 100644
--- a/function/settings.php
+++ b/function/settings.php
@@ -38,192 +38,193 @@ if (safetext(isset($_POST['userid'])) && safetext(isset($_POST['account_id'])) &
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }elseif(is_sameUserid($userid, $is_login["userid"]) === true){
+        $userid = $is_login["userid"];
+        
+        $settings_type = safetext($_POST['settings_type']);
 
-    $settings_type = safetext($_POST['settings_type']);
+        if($settings_type == "icon"){
+            if(isset($_FILES["data"])){
+                if (!(empty($_FILES['data']['name']))) {
+                    $uploadedFile = $_FILES['data'];
+                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../usericons/');
+                    if($beforeUploadError === null){
+                        if(check_mime($uploadedFile['tmp_name'])){
+                            $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
+                            delete_exif($extension, $uploadedFile['tmp_name']);
+                            resizeImage($uploadedFile['tmp_name'], 512, 512);
 
-    if($settings_type == "icon"){
-        if(isset($_FILES["data"])){
-            if (!(empty($_FILES['data']['name']))) {
-                $uploadedFile = $_FILES['data'];
-                if(check_mime($uploadedFile['tmp_name'])){
-                    $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
-                    delete_exif($extension, $uploadedFile['tmp_name']);
-                    resizeImage($uploadedFile['tmp_name'], 512, 512);
-
-                    if(AMS3_CHKS == "true"){
-                        $usericonurl = getUserData($pdo, $userid)["iconname"];
-                        if(filter_var($usericonurl, FILTER_VALIDATE_URL)){
-                            $s3delresult = deleteAmazonS3($usericonurl);
+                            if(AMS3_CHKS == "true"){
+                                $usericonurl = getUserData($pdo, $userid)["iconname"];
+                                if(filter_var($usericonurl, FILTER_VALIDATE_URL)){
+                                    $s3delresult = deleteAmazonS3($usericonurl);
+                                }else{
+                                    $s3delresult = true;
+                                }
+                                if($s3delresult == true){
+                                    $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                                }else{
+                                    $s3result = false;
+                                }
+                            }else{
+                                if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
+                                    $newFilename = createUniqId() . '-'.$userid.'.webp';
+                                }else{
+                                    $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
+                                }
+                                $uploadedPath = 'usericons/' . $newFilename;
+                                $result = move_uploaded_file($uploadedFile['tmp_name'], '../'.$uploadedPath);
+                                
+                                if ($result) {
+                                    $iconName = $uploadedPath; // 保存されたファイルのパスを使用
+                                } else {
+                                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../usericons/') ?? "ERROR";
+                                    $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
+                                }
+                            }
+                            if(isset($s3result)){
+                                if($s3result == false){
+                                    $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
+                                }else{
+                                    $iconName = $s3result; // S3に保存されたファイルのパスを使用
+                                }
+                            }   
                         }else{
-                            $s3delresult = true;
-                        }
-                        if($s3delresult == true){
-                            $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
-                        }else{
-                            $s3result = false;
+                            $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
                         }
                     }else{
-                        if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
-                            $newFilename = createUniqId() . '-'.$userid.'.webp';
-                        }else{
-                            $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
-                        }
-                        $uploadedPath = 'usericons/' . $newFilename;
-                        $result = move_uploaded_file($uploadedFile['tmp_name'], '../'.$uploadedPath);
-                        
-                        if ($result) {
-                            $iconName = $uploadedPath; // 保存されたファイルのパスを使用
-                        } else {
-                            $errnum = $uploadedFile['error'];
-                            if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                            if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                            if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                            if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                            if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                            if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                            if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$errcode.'';
-                        }
-                    }
-                    if(isset($s3result)){
-                        if($s3result == false){
-                            $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
-                        }else{
-                            $iconName = $s3result; // S3に保存されたファイルのパスを使用
-                        }
-                    }   
-                }else{
-                    $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
-                }
-            }else{
-                $error_message[] = 'アイコン画像を選択してください(PHOTO_SELECT_PLEASE)';
-            }
-        
-            if(empty($error_message)) {
-                $currentIconPath = getUserData($pdo, $userid)["iconname"];
-
-                $pdo->beginTransaction();
-                try {
-                    $stmt = $pdo->prepare("UPDATE account SET iconname = :iconname WHERE userid = :userid");
-                    $stmt->bindValue(':iconname', $iconName, PDO::PARAM_STR);
-                    $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
-                    $res = $stmt->execute();
-                    $res = $pdo->commit();
-                } catch (Exception $e) {
-                    $pdo->rollBack();
-                }
-            
-                if ($res) {
-                    if ($currentIconPath) {
-                        unlink('../' . $currentIconPath);
-                    }
-                    echo json_encode(['success' => true]);
-                    exit;
-                } else {
-                    echo json_encode(['success' => false, 'error' => '更新に失敗しました']);
-                    exit;
-                }
-            
-                // プリペアドステートメントを削除
-                $stmt = null;
-            }else{
-                echo json_encode(['success' => false, 'error' => $error_message[0]]);
-                exit;
-            }
-        }
-    }
-
-    if($settings_type == "header"){
-        if(isset($_FILES["data"])){
-            if (!(empty($_FILES['data']['name']))) {
-                $uploadedFile = $_FILES['data'];
-                if(check_mime($uploadedFile['tmp_name'])){
-                    $extension = pathinfo($uploadedFile['name'], PATHINFO_EXTENSION);
-                    delete_exif($extension, $uploadedFile['tmp_name']);
-                    resizeImage($uploadedFile['tmp_name'], 2048, 1024);
-        
-                    if(AMS3_CHKS == "true"){
-                        $userheadurl = getUserData($pdo, $userid)["headname"];
-                        if(filter_var($userheadurl, FILTER_VALIDATE_URL)){
-                            $s3delresult = deleteAmazonS3($userheadurl);
-                        }else{
-                            $s3delresult = true;
-                        }
-                        if($s3delresult == true){
-                            $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
-                        }else{
-                            $s3result = false;
-                        }
-                    }else{
-                        if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
-                            $newFilename = createUniqId() . '-'.$userid.'.webp';
-                        }else{
-                            $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
-                        }
-                        $uploadedPath = 'userheads/' . $newFilename;
-                        $result = move_uploaded_file($uploadedFile['tmp_name'], '../'.$uploadedPath);
-                        
-                        if ($result) {
-                            $headName = $uploadedPath; // 保存されたファイルのパスを使用
-                        } else {
-                            $errnum = $uploadedFile['error'];
-                            if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                            if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                            if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                            if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                            if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                            if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                            if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                            $error_message[] = 'アップロード失敗！(2)エラーコード：' .$errcode.'';
-                        }
-                    }
-                    if(isset($s3result)){
-                        if($s3result == false){
-                            $error_message[] = 'アップロード失敗！(2)エラーコード： S3ERROR';
-                        }else{
-                            $headName = $s3result; // S3に保存されたファイルのパスを使用
-                        }
+                        $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
                     }
                 }else{
-                    $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
+                    $error_message[] = 'アイコン画像を選択してください(PHOTO_SELECT_PLEASE)';
                 }
-            }else{
-                $error_message[] = 'アイコン画像を選択してください(PHOTO_SELECT_PLEASE)';
-            }
-        
-            if(empty($error_message)) {
-                $currentHeadPath = getUserData($pdo, $userid)["headname"];
+            
+                if(empty($error_message)) {
+                    $currentIconPath = getUserData($pdo, $userid)["iconname"];
+
+                    $pdo->beginTransaction();
+                    try {
+                        $stmt = $pdo->prepare("UPDATE account SET iconname = :iconname WHERE userid = :userid");
+                        $stmt->bindValue(':iconname', $iconName, PDO::PARAM_STR);
+                        $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
+                        $res = $stmt->execute();
+                        $res = $pdo->commit();
+                    } catch (Exception $e) {
+                        $pdo->rollBack();
+                    }
                 
-                $pdo->beginTransaction();
-                try {
-                    $stmt = $pdo->prepare("UPDATE account SET headname = :headname WHERE userid = :userid");
-                    $stmt->bindValue(':headname', $headName, PDO::PARAM_STR);
-                    $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
-                    $res = $stmt->execute();
-                    $res = $pdo->commit();
-                } catch (Exception $e) {
-                    $pdo->rollBack();
-                }
-            
-                if ($res) {
-                    if ($currentHeadPath) {
-                        unlink('../' . $currentHeadPath);
+                    if ($res) {
+                        if ($currentIconPath) {
+                            unlink('../' . $currentIconPath);
+                        }
+                        echo json_encode(['success' => true]);
+                        exit;
+                    } else {
+                        echo json_encode(['success' => false, 'error' => '更新に失敗しました']);
+                        exit;
                     }
-                    echo json_encode(['success' => true]);
-                    exit;
-                } else {
-                    echo json_encode(['success' => false, 'error' => '更新に失敗しました']);
+                
+                    // プリペアドステートメントを削除
+                    $stmt = null;
+                }else{
+                    echo json_encode(['success' => false, 'error' => $error_message[0]]);
                     exit;
                 }
-            
-                // プリペアドステートメントを削除
-                $stmt = null;
-            }else{
-                echo json_encode(['success' => false, 'error' => $error_message[0]]);
-                exit;
             }
         }
+
+        if($settings_type == "header"){
+            if(isset($_FILES["data"])){
+                if (!(empty($_FILES['data']['name']))) {
+                    $uploadedFile = $_FILES['data'];
+                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../userheads/');
+                    if($beforeUploadError === null){
+                        if(check_mime($uploadedFile['tmp_name'])){
+                            $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
+                            delete_exif($extension, $uploadedFile['tmp_name']);
+                            resizeImage($uploadedFile['tmp_name'], 2048, 1024);
+                
+                            if(AMS3_CHKS == "true"){
+                                $userheadurl = getUserData($pdo, $userid)["headname"];
+                                if(filter_var($userheadurl, FILTER_VALIDATE_URL)){
+                                    $s3delresult = deleteAmazonS3($userheadurl);
+                                }else{
+                                    $s3delresult = true;
+                                }
+                                if($s3delresult == true){
+                                    $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                                }else{
+                                    $s3result = false;
+                                }
+                            }else{
+                                if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
+                                    $newFilename = createUniqId() . '-'.$userid.'.webp';
+                                }else{
+                                    $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
+                                }
+                                $uploadedPath = 'userheads/' . $newFilename;
+                                $result = move_uploaded_file($uploadedFile['tmp_name'], '../'.$uploadedPath);
+                                
+                                if ($result) {
+                                    $headName = $uploadedPath; // 保存されたファイルのパスを使用
+                                } else {
+                                    $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/../userheads/') ?? "ERROR";
+                                    $error_message[] = 'アップロード失敗！(2)エラーコード：' .$beforeUploadError.'';
+                                }
+                            }
+                            if(isset($s3result)){
+                                if($s3result == false){
+                                    $error_message[] = 'アップロード失敗！(2)エラーコード： S3ERROR';
+                                }else{
+                                    $headName = $s3result; // S3に保存されたファイルのパスを使用
+                                }
+                            }
+                        }else{
+                            $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
+                        }
+                    }else{
+                        $error_message[] = 'アップロード失敗！(2)エラーコード：' .$beforeUploadError.'';
+                    }
+                }else{
+                    $error_message[] = 'アイコン画像を選択してください(PHOTO_SELECT_PLEASE)';
+                }
+            
+                if(empty($error_message)) {
+                    $currentHeadPath = getUserData($pdo, $userid)["headname"];
+                    
+                    $pdo->beginTransaction();
+                    try {
+                        $stmt = $pdo->prepare("UPDATE account SET headname = :headname WHERE userid = :userid");
+                        $stmt->bindValue(':headname', $headName, PDO::PARAM_STR);
+                        $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
+                        $res = $stmt->execute();
+                        $res = $pdo->commit();
+                    } catch (Exception $e) {
+                        $pdo->rollBack();
+                    }
+                
+                    if ($res) {
+                        if ($currentHeadPath) {
+                            unlink('../' . $currentHeadPath);
+                        }
+                        echo json_encode(['success' => true]);
+                        exit;
+                    } else {
+                        echo json_encode(['success' => false, 'error' => '更新に失敗しました']);
+                        exit;
+                    }
+                
+                    // プリペアドステートメントを削除
+                    $stmt = null;
+                }else{
+                    echo json_encode(['success' => false, 'error' => $error_message[0]]);
+                    exit;
+                }
+            }
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 
 } else {
diff --git a/function/ueuse.php b/function/ueuse.php
index 31391f3..ef4c641 100644
--- a/function/ueuse.php
+++ b/function/ueuse.php
@@ -27,74 +27,77 @@ if (safetext(isset($_POST['ueuse'])) && safetext(isset($_POST['userid'])) && saf
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }elseif(is_sameUserid($userid, $is_login["userid"]) === true){
+        //ユーザーの認証情報を取得
+        $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
+        $query->execute(array(':userid' => $userid));
+        $result2 = $query->fetch();
+        if($result2["loginid"] === $loginid){
+            if(!($result2["role"] == "ice")){
+                if(!(empty($result2["other_settings"]))){
+                    $isAIBWM = val_OtherSettings("isAIBlockWaterMark", $result2["other_settings"]);
+                }else{
+                    $isAIBWM = false;
+                }
 
-    //ユーザーの認証情報を取得
-    $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
-    $query->execute(array(':userid' => $userid));
-    $result2 = $query->fetch();
-    if($result2["loginid"] === $loginid){
-        if(!($result2["role"] == "ice")){
-            if(!(empty($result2["other_settings"]))){
-                $isAIBWM = val_OtherSettings("isAIBlockWaterMark", $result2["other_settings"]);
-            }else{
-                $isAIBWM = false;
-            }
+                if(isset($nsfw_chk) && $nsfw_chk == "true"){
+                    $nsfw_chk = "true";
+                }else{
+                    $nsfw_chk = "false";
+                }
 
-            if(isset($nsfw_chk) && $nsfw_chk == "true"){
-                $nsfw_chk = "true";
-            }else{
-                $nsfw_chk = "false";
-            }
+                if(isset($_FILES['upload_images'])){
+                    $photo1 = $_FILES['upload_images'];
+                }else{
+                    $photo1 = null;
+                }
+                if(isset($_FILES['upload_images2'])){
+                    $photo2 = $_FILES['upload_images2'];
+                }else{
+                    $photo2 = null;
+                }
+                if(isset($_FILES['upload_images3'])){
+                    $photo3 = $_FILES['upload_images3'];
+                }else{
+                    $photo3 = null;
+                }
+                if(isset($_FILES['upload_images4'])){
+                    $photo4 = $_FILES['upload_images4'];
+                }else{
+                    $photo4 = null;
+                }
+                if(isset($_FILES['upload_videos1'])){
+                    $video1 = $_FILES['upload_videos1'];
+                }else{
+                    $video1 = null;
+                }
 
-            if(isset($_FILES['upload_images'])){
-                $photo1 = $_FILES['upload_images'];
-            }else{
-                $photo1 = null;
-            }
-            if(isset($_FILES['upload_images2'])){
-                $photo2 = $_FILES['upload_images2'];
-            }else{
-                $photo2 = null;
-            }
-            if(isset($_FILES['upload_images3'])){
-                $photo3 = $_FILES['upload_images3'];
-            }else{
-                $photo3 = null;
-            }
-            if(isset($_FILES['upload_images4'])){
-                $photo4 = $_FILES['upload_images4'];
-            }else{
-                $photo4 = null;
-            }
-            if(isset($_FILES['upload_videos1'])){
-                $video1 = $_FILES['upload_videos1'];
-            }else{
-                $video1 = null;
-            }
+                if(isset($_POST['rpuniqid'])){
+                    $rpUniqid = safetext($_POST['rpuniqid']);
+                }else{
+                    $rpUniqid = "";
+                }
 
-            if(isset($_POST['rpuniqid'])){
-                $rpUniqid = safetext($_POST['rpuniqid']);
-            }else{
-                $rpUniqid = "";
-            }
+                $ruUniqid = "";
+                $ueuse_result = send_ueuse($userid,$rpUniqid,$ruUniqid,$ueuse,$photo1,$photo2,$photo3,$photo4,$video1,$nsfw_chk,$isAIBWM);
 
-            $ruUniqid = "";
-            $ueuse_result = send_ueuse($userid,$rpUniqid,$ruUniqid,$ueuse,$photo1,$photo2,$photo3,$photo4,$video1,$nsfw_chk,$isAIBWM);
-
-            if($ueuse_result[0] == true){
-                echo json_encode(['success' => true]);
-                exit;
+                if($ueuse_result[0] == true){
+                    echo json_encode(['success' => true]);
+                    exit;
+                }else{
+                    echo json_encode(['success' => false, 'error' => $ueuse_result[1]]);
+                    exit;
+                }
             }else{
-                echo json_encode(['success' => false, 'error' => $ueuse_result[1]]);
-                exit;
+                echo json_encode(['success' => false, 'error' => 'お使いのアカウントではユーズができません。']);
+                exit; 
             }
         }else{
-            echo json_encode(['success' => false, 'error' => 'お使いのアカウントではユーズができません。']);
-            exit; 
+            echo json_encode(['success' => false, 'error' => 'ユーズに失敗しました。']);
+            exit;
         }
     }else{
-        echo json_encode(['success' => false, 'error' => 'ユーズに失敗しました。']);
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
     }
 } else {
diff --git a/js/view_function.js b/js/view_function.js
index c7a637f..0be371c 100644
--- a/js/view_function.js
+++ b/js/view_function.js
@@ -355,21 +355,20 @@ function formatMarkdown(text) {
 
     // a_link
     text = text.replace(/(https:\/\/[\w!?\/+\-_~;.,*&@#$%()+|https:\/\/[ぁ-んァ-ヶ一ー-龠々\w\-\/?=&%.]+)/g, function (url) {
-        const escapedUrl = url;
-        const no_https_link = escapedUrl.replace("https://", "");
+        const no_https_link = url.replace("https://", "");
         let linkText = no_https_link;
-        
         if (no_https_link.length > 48) {
             linkText = no_https_link.substring(0, 48) + '...';
         }
-        
-        return `<a href="${escapedUrl}" target="_blank" rel="noopener">${linkText}</a>`;
+        const html = `<a href="${url}" target="_blank" rel="noopener">${linkText}</a>`;
+        return createPlaceholder(html);
     });
 
     // ハッシュタグ
     text = text.replace(/(^|[^a-zA-Z0-9_])#([a-zA-Z0-9ぁ-んァ-ン一-龥ー_]+)/gu, function (match, before, tag) {
         const encodedTag = encodeURIComponent("#" + tag);
-        return `${before}<a href="/search?q=${encodedTag}" class="hashtags">#${tag}</a>`;
+        const html = `${before}<a href="/search?q=${encodedTag}" class="hashtags">#${tag}</a>`;
+        return createPlaceholder(html);
     });
 
     // 独自構文
@@ -390,6 +389,7 @@ function formatMarkdown(text) {
         .replace(/~~(.+?)~~/g, '<s>$1</s>')
         .replace(/^&gt;&gt;&gt; ?(.*)$/gm, '<span class="quote">$1</span>')
         .replace(/\|\|(.+?)\|\|/g, '<span class="blur">$1</span>')
+        .replace(/^-# (.+)/gm, '<p class="chotto_small">$1</p>')
         .replace(/^# (.+)/gm, '<h1>$1</h1>')
         .replace(/^## (.+)/gm, '<h2>$1</h2>')
         .replace(/^### (.+)/gm, '<h3>$1</h3>')
@@ -412,17 +412,17 @@ function formatMarkdown(text) {
     return final;
 }
 
-function YouTube_and_nicovideo_Links(postText) {
+async function YouTube_and_nicovideo_Links(postText) {
     const urlPattern = /(https:\/\/[^\s<>\[\]'"“”]+)/g;
     const urls = postText.match(urlPattern);
     let embedCode = '';
 
     if (!urls) return null;
 
-    let embeddedOnce = false; // ← 埋め込みが1回されたかどうか
+    let embeddedOnce = false;
 
-    urls.forEach(url => {
-        if (embeddedOnce) return; // ← すでに埋め込みしたらスキップ
+    for (const url of urls) {
+        if (embeddedOnce) return;
 
         try {
             const parsed = new URL(url);
@@ -452,7 +452,6 @@ function YouTube_and_nicovideo_Links(postText) {
                     embedCode = `<div class="youtube_and_nicovideo_player"><iframe src="https://www.youtube-nocookie.com/embed/${videoId}?start=${videoTime}" rel="0" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe></div>`;
                     embeddedOnce = true;
                 }
-
             } else if (['nicovideo.jp', 'nico.ms'].includes(host)) {
                 if (parsed.pathname.includes('/watch/')) {
                     videoId = parsed.pathname.split('/watch/')[1];
@@ -471,13 +470,24 @@ function YouTube_and_nicovideo_Links(postText) {
                     embedCode = `<div class="youtube_and_nicovideo_player"><iframe src="https://embed.nicovideo.jp/watch/${videoId}?from=${videoTime}" frameborder="0" allowfullscreen></iframe></div>`;
                     embeddedOnce = true;
                 }
-            } else {
-                embedCode = null
+            }else if (['soundcloud.com', 'on.soundcloud.com'].includes(host)) {
+                const oembedUrl = `https://soundcloud.com/oembed?format=json&maxheight=400&url=${encodeURIComponent(url)}`;
+                
+                const response = await $.ajax({
+                    url: oembedUrl,
+                    method: 'GET',
+                    dataType: 'json'
+                });
+
+                if (response && response.html) {
+                    embedCode = `<div class="youtube_and_nicovideo_player">${response.html}</div>`;
+                    embeddedOnce = true;
+                }
             }
         } catch (e) {
             // 無視
         }
-    });
+    };
 
     return embedCode;
 }
@@ -946,23 +956,25 @@ async function createUeuseHtml(ueuse, selectedUniqid = null) {
 
     if (ueuse["type"] == "Reuse") {
         if (ueuse["ueuse"].length > 0) {
-            if (YouTube_and_nicovideo_Links(ueuse["ueuse"])) {
-                contentHtml = contentHtml + YouTube_and_nicovideo_Links(ueuse["ueuse"]);
+            const embed = await YouTube_and_nicovideo_Links(ueuse["ueuse"]);
+            if (embed) {
+                contentHtml = contentHtml + embed;
             }
         } else {
             if (ueuse["reuse"] != null) {
-                if (YouTube_and_nicovideo_Links(ueuse["reuse"]["ueuse"])) {
-                    contentHtml = contentHtml + YouTube_and_nicovideo_Links(ueuse["reuse"]["ueuse"]);
+                const embed = await YouTube_and_nicovideo_Links(ueuse["reuse"]["ueuse"]);
+                if (embed) {
+                    contentHtml = contentHtml + embed;
                 }
             }
-
         }
-
     } else {
-        if (YouTube_and_nicovideo_Links(ueuse["ueuse"])) {
-            contentHtml = contentHtml + YouTube_and_nicovideo_Links(ueuse["ueuse"]);
+        const embed = await YouTube_and_nicovideo_Links(ueuse["ueuse"]);
+        if (embed) {
+            contentHtml = contentHtml + embed;
         }
     }
+
     var favbox = `
         <hr>
         <div class="favbox">
diff --git a/migration/index.php b/migration/index.php
index 4b47113..b484df8 100644
--- a/migration/index.php
+++ b/migration/index.php
@@ -78,9 +78,13 @@ if( !empty($_POST['btn_submit']) ) {
         if(empty($domain)) {
             $error_message[] = '移行元のサーバードメインを入力してください。(INPUT_PLEASE)';
         }else{
-            $domain_response = @file_get_contents("https://".$domain."/");
-            if (empty($domain_response)) {
-                $error_message[] = '入力されたドメインに接続できませんでした。(INPUT_PLEASE)';
+            if (is_not_private_url("https://".$domain."/")) {
+                $domain_response = @file_get_contents("https://".$domain."/");
+                if (empty($domain_response)) {
+                    $error_message[] = '入力されたドメインに接続できませんでした。(INPUT_PLEASE)';
+                }
+            }else{
+                $error_message[] = '入力されたドメインに接続できませんでした。(BAD_REQUEST)';
             }
         }
         
@@ -203,110 +207,118 @@ if( !empty($_POST['btn_submit']) ) {
                             if($json_account_data == false){
                                 $error_message[] = "アカウントの移行を最初からやり直してください。(MIGRATION_SORRY)";
                             }else{
-                                
                                 //アイコン&ヘッダー
-                                $icondata = file_get_contents($json_account_data["userdata"]["user_icon"]);
-                                $finfo = finfo_open(FILEINFO_MIME_TYPE);
-                                $mime_type = finfo_buffer($finfo, $icondata);
-                                $safe_img_mime = [
-                                    "image/gif" => 'gif',
-                                    "image/jpeg" => 'jpg',
-                                    "image/png" => 'png',
-                                    "image/svg+xml" => 'svg',
-                                    "image/webp" => 'webp',
-                                    "image/bmp" => 'bmp',
-                                    "image/x-icon" => 'ico',
-                                    "image/tiff" => 'tiff'
-                                ];
-                                if(isset($safe_img_mime[$mime_type])){
-                                    $extension = $safe_img_mime[$mime_type];
-                                    $temp_file = tempnam(sys_get_temp_dir(), 'img');
-                                    file_put_contents($temp_file, $icondata);
+                                if (is_not_private_url("https://".$json_account_data["userdata"]["user_icon"]."/")) {
+                                    $icondata = file_get_contents($json_account_data["userdata"]["user_icon"]);
+                                    $finfo = finfo_open(FILEINFO_MIME_TYPE);
+                                    $mime_type = finfo_buffer($finfo, $icondata);
+                                    $safe_img_mime = [
+                                        "image/gif" => 'gif',
+                                        "image/jpeg" => 'jpg',
+                                        "image/png" => 'png',
+                                        "image/svg+xml" => 'svg',
+                                        "image/webp" => 'webp',
+                                        "image/bmp" => 'bmp',
+                                        "image/x-icon" => 'ico',
+                                        "image/tiff" => 'tiff'
+                                    ];
+                                    if(isset($safe_img_mime[$mime_type])){
+                                        $extension = $safe_img_mime[$mime_type];
+                                        $temp_file = tempnam(sys_get_temp_dir(), 'img');
+                                        file_put_contents($temp_file, $icondata);
 
-                                    delete_exif($extension, $temp_file);
+                                        delete_exif($extension, $temp_file);
 
-                                    // リサイズ
-                                    resizeImage($temp_file, 512, 512);
+                                        // リサイズ
+                                        resizeImage($temp_file, 512, 512);
 
-                                    if(check_mime($temp_file) == "image/webp"){
-                                        // 新しいファイル名を生成（uniqid + 拡張子）
-                                        $newFilename = createUniqId() . '-'.$new_userid.'.webp';
-                                    }else{
-                                        // 新しいファイル名を生成（uniqid + 拡張子）
-                                        $newFilename = createUniqId() . '-'.$new_userid.'.' . $extension;
-                                    }
-                                    
-                                    // 保存先のパスを生成
-                                    $uploadedPath = 'usericons/' . $newFilename;
-                                    
-                                    // ファイルを移動
-                                    $result = copy($temp_file, "../".$uploadedPath);
-                                    
-                                    if ($result) {
-                                        $iconName = $uploadedPath; // 保存されたファイルのパスを使用
-                                    } else {
-                                        $errnum = $uploadedFile['error'];
-                                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                                        $error_message[] = 'アップロード失敗！(1)エラーコード：' .$uploadedFile['error'].'';
+                                        if(check_mime($temp_file) == "image/webp"){
+                                            // 新しいファイル名を生成（uniqid + 拡張子）
+                                            $newFilename = createUniqId() . '-'.$new_userid.'.webp';
+                                        }else{
+                                            // 新しいファイル名を生成（uniqid + 拡張子）
+                                            $newFilename = createUniqId() . '-'.$new_userid.'.' . $extension;
+                                        }
+                                        
+                                        // 保存先のパスを生成
+                                        $uploadedPath = 'usericons/' . $newFilename;
+                                        
+                                        // ファイルを移動
+                                        $result = copy($temp_file, "../".$uploadedPath);
+                                        
+                                        if ($result) {
+                                            $iconName = $uploadedPath; // 保存されたファイルのパスを使用
+                                        } else {
+                                            $errnum = $uploadedFile['error'];
+                                            if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
+                                            if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
+                                            if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
+                                            if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
+                                            if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
+                                            if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
+                                            if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
+                                            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$uploadedFile['error'].'';
+                                        }
                                     }
+                                }else{
+                                    $error_message[] = '入力されたドメインに接続できませんでした。(BAD_REQUEST)';
                                 }
+                                
                                 //------------------
-                                $headdata = file_get_contents($json_account_data["userdata"]["user_header"]);
-                                $finfo = finfo_open(FILEINFO_MIME_TYPE);
-                                $mime_type = finfo_buffer($finfo, $headdata);
-                                $safe_img_mime = [
-                                    "image/gif" => 'gif',
-                                    "image/jpeg" => 'jpg',
-                                    "image/png" => 'png',
-                                    "image/svg+xml" => 'svg',
-                                    "image/webp" => 'webp',
-                                    "image/bmp" => 'bmp',
-                                    "image/x-icon" => 'ico',
-                                    "image/tiff" => 'tiff'
-                                ];
-                                if(isset($safe_img_mime[$mime_type])){
-                                    $extension = $safe_img_mime[$mime_type];
-                                    $temp_file = tempnam(sys_get_temp_dir(), 'img');
-                                    file_put_contents($temp_file, $headdata);
+                                if (is_not_private_url("https://".$json_account_data["userdata"]["user_header"]."/")) {
+                                    $headdata = file_get_contents($json_account_data["userdata"]["user_header"]);
+                                    $finfo = finfo_open(FILEINFO_MIME_TYPE);
+                                    $mime_type = finfo_buffer($finfo, $headdata);
+                                    $safe_img_mime = [
+                                        "image/gif" => 'gif',
+                                        "image/jpeg" => 'jpg',
+                                        "image/png" => 'png',
+                                        "image/svg+xml" => 'svg',
+                                        "image/webp" => 'webp',
+                                        "image/bmp" => 'bmp',
+                                        "image/x-icon" => 'ico',
+                                        "image/tiff" => 'tiff'
+                                    ];
+                                    if(isset($safe_img_mime[$mime_type])){
+                                        $extension = $safe_img_mime[$mime_type];
+                                        $temp_file = tempnam(sys_get_temp_dir(), 'img');
+                                        file_put_contents($temp_file, $headdata);
 
-                                    delete_exif($extension, $temp_file);
+                                        delete_exif($extension, $temp_file);
 
-                                    // リサイズ
-                                    resizeImage($temp_file, 2048, 1024);
+                                        // リサイズ
+                                        resizeImage($temp_file, 2048, 1024);
 
-                                    if(check_mime($temp_file) == "image/webp"){
-                                        // 新しいファイル名を生成（uniqid + 拡張子）
-                                        $newFilename = createUniqId() . '-'.$new_userid.'.webp';
-                                    }else{
-                                        // 新しいファイル名を生成（uniqid + 拡張子）
-                                        $newFilename = createUniqId() . '-'.$new_userid.'.' . $extension;
-                                    }
-                                    
-                                    // 保存先のパスを生成
-                                    $uploadedPath = 'userheads/' . $newFilename;
-                                    
-                                    // ファイルを移動
-                                    $result = copy($temp_file, "../".$uploadedPath);
-                                    
-                                    if ($result) {
-                                        $headName = $uploadedPath; // 保存されたファイルのパスを使用
-                                    } else {
-                                        $errnum = $uploadedFile['error'];
-                                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                                        $error_message[] = 'アップロード失敗！(2)エラーコード：' .$uploadedFile['error'].'';
+                                        if(check_mime($temp_file) == "image/webp"){
+                                            // 新しいファイル名を生成（uniqid + 拡張子）
+                                            $newFilename = createUniqId() . '-'.$new_userid.'.webp';
+                                        }else{
+                                            // 新しいファイル名を生成（uniqid + 拡張子）
+                                            $newFilename = createUniqId() . '-'.$new_userid.'.' . $extension;
+                                        }
+                                        
+                                        // 保存先のパスを生成
+                                        $uploadedPath = 'userheads/' . $newFilename;
+                                        
+                                        // ファイルを移動
+                                        $result = copy($temp_file, "../".$uploadedPath);
+                                        
+                                        if ($result) {
+                                            $headName = $uploadedPath; // 保存されたファイルのパスを使用
+                                        } else {
+                                            $errnum = $uploadedFile['error'];
+                                            if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
+                                            if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
+                                            if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
+                                            if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
+                                            if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
+                                            if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
+                                            if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
+                                            $error_message[] = 'アップロード失敗！(2)エラーコード：' .$uploadedFile['error'].'';
+                                        }
                                     }
+                                }else{
+                                    $error_message[] = '入力されたドメインに接続できませんでした。(BAD_REQUEST)';
                                 }
 
                                 $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
diff --git a/new.php b/new.php
index 1182dc8..39b3d67 100644
--- a/new.php
+++ b/new.php
@@ -171,15 +171,7 @@ if( !empty($_POST['btn_submit']) ) {
             if ($result) {
                 $iconName = $uploadedPath;
             } else {
-                $errnum = $uploadedFile['error'];
-                if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                $error_message[] = 'アップロード失敗！(1)エラーコード：' .$uploadedFile['error'].'';
+                $error_message[] = 'アップロード失敗！(1)エラーコード： ERROR';
             }
         }
         if(isset($s3result)){
@@ -191,47 +183,45 @@ if( !empty($_POST['btn_submit']) ) {
         }
     } else {
         $uploadedFile = $_FILES['image'];
-        if(!(empty($uploadedFile['tmp_name']))){
-            if(check_mime($uploadedFile['tmp_name'])){
-                $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
-                delete_exif($extension, $uploadedFile['tmp_name']);
-                resizeImage($uploadedFile['tmp_name'], 512, 512);
+        $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/usericons/');
+        if($beforeUploadError === null){
+            if(!(empty($uploadedFile['tmp_name']))){
+                if(check_mime($uploadedFile['tmp_name'])){
+                    $extension = convert_mime(check_mime($uploadedFile['tmp_name']));
+                    delete_exif($extension, $uploadedFile['tmp_name']);
+                    resizeImage($uploadedFile['tmp_name'], 512, 512);
 
-                if(AMS3_CHKS == "true"){
-                    $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                    if(AMS3_CHKS == "true"){
+                        $s3result = uploadAmazonS3($uploadedFile['tmp_name']);
+                    }else{
+                        if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
+                            $newFilename = createUniqId() . '-'.$userid.'.webp';
+                        }else{
+                            $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
+                        }
+                        $uploadedPath = 'usericons/' . $newFilename;
+                        $result = move_uploaded_file($uploadedFile['tmp_name'], $uploadedPath);
+                        
+                        if ($result) {
+                            $iconName = $uploadedPath; // 保存されたファイルのパスを使用
+                        } else {
+                            $beforeUploadError = check_upload_error($uploadedFile, __DIR__.'/usericons/') ?? "ERROR";
+                            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
+                        }
+                    }
+                    if(isset($s3result)){
+                        if($s3result == false){
+                            $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
+                        }else{
+                            $iconName = $s3result; // S3に保存されたファイルのパスを使用
+                        }
+                    }   
                 }else{
-                    if(check_mime($uploadedFile['tmp_name']) == "image/webp"){
-                        $newFilename = createUniqId() . '-'.$userid.'.webp';
-                    }else{
-                        $newFilename = createUniqId() . '-'.$userid.'.' . $extension;
-                    }
-                    $uploadedPath = 'usericons/' . $newFilename;
-                    $result = move_uploaded_file($uploadedFile['tmp_name'], $uploadedPath);
-                    
-                    if ($result) {
-                        $iconName = $uploadedPath; // 保存されたファイルのパスを使用
-                    } else {
-                        $errnum = $uploadedFile['error'];
-                        if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-                        if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-                        if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-                        if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-                        if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-                        if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-                        if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-                        $error_message[] = 'アップロード失敗！(1)エラーコード：' .$errcode.'';
-                    }
+                    $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
                 }
-                if(isset($s3result)){
-                    if($s3result == false){
-                        $error_message[] = 'アップロード失敗！(1)エラーコード： S3ERROR';
-                    }else{
-                        $iconName = $s3result; // S3に保存されたファイルのパスを使用
-                    }
-                }   
-            }else{
-                $error_message[] = "使用できない画像形式です。(FILE_UPLOAD_DEKINAKATTA)";
             }
+        }else{
+            $error_message[] = 'アップロード失敗！(1)エラーコード：' .$beforeUploadError.'';
         }
     }
 
@@ -247,15 +237,7 @@ if( !empty($_POST['btn_submit']) ) {
         if ($result) {
             $headName = $uploadedPath;
         } else {
-            $errnum = $uploadedFile['error'];
-            if($errnum === 1){$errcode = "FILE_DEKASUGUI_PHP_INI_KAKUNIN";}
-            if($errnum === 2){$errcode = "FILE_DEKASUGUI_HTML_KAKUNIN";}
-            if($errnum === 3){$errcode = "FILE_SUKOSHIDAKE_UPLOAD";}
-            if($errnum === 4){$errcode = "FILE_UPLOAD_DEKINAKATTA";}
-            if($errnum === 6){$errcode = "TMP_FOLDER_NAI";}
-            if($errnum === 7){$errcode = "FILE_KAKIKOMI_SIPPAI";}
-            if($errnum === 8){$errcode = "PHPINFO()_KAKUNIN";}
-            $error_message[] = 'アップロード失敗！(2)エラーコード：' .$uploadedFile['error'].'';
+            $error_message[] = 'アップロード失敗！(1)エラーコード： ERROR';
         }
     }
     if(isset($s3result)){
diff --git a/nextpage/bookmarktimeline.php b/nextpage/bookmarktimeline.php
index 372efde..b21a524 100644
--- a/nextpage/bookmarktimeline.php
+++ b/nextpage/bookmarktimeline.php
@@ -14,135 +14,138 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
 
-        $messages = array();
-        
-        $bookmarkQuery = $pdo->prepare("SELECT bookmark FROM account WHERE userid = :userid");
-        $bookmarkQuery->bindValue(':userid', $userId);
-        $bookmarkQuery->execute();
-        $bookmarkData = $bookmarkQuery->fetch();
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-        $allBookmarks = explode(',', $bookmarkData['bookmark'] ?? '');
-        $reversedBookmarks = array_reverse($allBookmarks);
-        $bookmarkList = array_chunk($reversedBookmarks, $itemsPerPage);
-
-        $list_Page = max(0, (int)$pageNumber - 1);
-        $messages = [];
-
-        $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
-
-        if (!empty($bookmarkList[$list_Page])) {
-            $currentPageUniqIds = $bookmarkList[$list_Page];
-
-            // 名前付きプレースホルダ作成
-            $placeholders = [];
-            $params = [];
-            foreach ($currentPageUniqIds as $i => $uniqid) {
-                $key = ":uniqid$i";
-                $placeholders[] = $key;
-                $params[$key] = $uniqid;
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
             }
-            $placeholderStr = implode(',', $placeholders);
 
-            $sql = "SELECT ueuse.*
-                    FROM ueuse
-                    LEFT JOIN account ON ueuse.account = account.userid
-                    WHERE ueuse.uniqid IN ($placeholderStr) AND account.role != 'ice' {$blocked_accounts['sql']} 
-                    ORDER BY FIELD(ueuse.uniqid, $placeholderStr)";
+            $messages = array();
+            
+            $bookmarkQuery = $pdo->prepare("SELECT bookmark FROM account WHERE userid = :userid");
+            $bookmarkQuery->bindValue(':userid', $userId);
+            $bookmarkQuery->execute();
+            $bookmarkData = $bookmarkQuery->fetch();
 
-            $stmt = $pdo->prepare($sql);
-            foreach ($params as $key => $val) {
-                $stmt->bindValue($key, $val, PDO::PARAM_STR);
-            }
-            foreach ($blocked_accounts['params'] as $ph => $val) {
-                $stmt->bindValue($ph, $val, PDO::PARAM_STR);
-            }
-            $stmt->execute();
-            $messages = $stmt->fetchAll(PDO::FETCH_ASSOC);
-        }
+            $allBookmarks = explode(',', $bookmarkData['bookmark'] ?? '');
+            $reversedBookmarks = array_reverse($allBookmarks);
+            $bookmarkList = array_chunk($reversedBookmarks, $itemsPerPage);
 
-        // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-        $messages = getDatasUeuse($pdo, $messages);
-        //adsystem------------------
+            $list_Page = max(0, (int)$pageNumber - 1);
+            $messages = [];
 
-        $message['ads'] = "false";
+            $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
 
-        $today = date("Y-m-d H:i:s");
+            if (!empty($bookmarkList[$list_Page])) {
+                $currentPageUniqIds = $bookmarkList[$list_Page];
 
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if(!(empty($adsresult))){
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
-
-        $ueuseItems = array();
-        if(!empty($messages)){
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+                // 名前付きプレースホルダ作成
+                $placeholders = [];
+                $params = [];
+                foreach ($currentPageUniqIds as $i => $uniqid) {
+                    $key = ":uniqid$i";
+                    $placeholders[] = $key;
+                    $params[$key] = $uniqid;
                 }
+                $placeholderStr = implode(',', $placeholders);
+
+                $sql = "SELECT ueuse.*
+                        FROM ueuse
+                        LEFT JOIN account ON ueuse.account = account.userid
+                        WHERE ueuse.uniqid IN ($placeholderStr) AND account.role != 'ice' {$blocked_accounts['sql']} 
+                        ORDER BY FIELD(ueuse.uniqid, $placeholderStr)";
+
+                $stmt = $pdo->prepare($sql);
+                foreach ($params as $key => $val) {
+                    $stmt->bindValue($key, $val, PDO::PARAM_STR);
+                }
+                foreach ($blocked_accounts['params'] as $ph => $val) {
+                    $stmt->bindValue($ph, $val, PDO::PARAM_STR);
+                }
+                $stmt->execute();
+                $messages = $stmt->fetchAll(PDO::FETCH_ASSOC);
             }
 
-            if($message['ads'] === "true"){
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
+            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+            $messages = getDatasUeuse($pdo, $messages);
+            //adsystem------------------
+
+            $message['ads'] = "false";
+
+            $today = date("Y-m-d H:i:s");
+
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if(!(empty($adsresult))){
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
+
+            $ueuseItems = array();
+            if(!empty($messages)){
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
+                    }
+                }
+
+                if($message['ads'] === "true"){
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                }else{
+                    $adsystem = null;
+                }
+
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
                 );
-            }else{
-                $adsystem = null;
-            }
-
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-    
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }
         
-        $pdo = null;
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }else{
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }
+            
+            $pdo = null;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/followtimeline.php b/nextpage/followtimeline.php
index 6f54c36..c5c1366 100644
--- a/nextpage/followtimeline.php
+++ b/nextpage/followtimeline.php
@@ -14,121 +14,124 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        $followList = getFolloweeList($pdo, $userId);
-        $messages = array(); // 初期化
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-        // 空ならエラー回避
-        if (!(empty($followList))){
-            $placeholders = implode(',', array_fill(0, count($followList), '?'));
-
-            $sql = "SELECT ueuse.* 
-                    FROM ueuse 
-                    LEFT JOIN account ON ueuse.account = account.userid 
-                    WHERE ueuse.rpuniqid = '' 
-                    AND account.role != 'ice' 
-                    AND ueuse.account IN ($placeholders)
-                    ORDER BY ueuse.datetime DESC 
-                    LIMIT ? OFFSET ?";
-
-            $stmt = $pdo->prepare($sql);
-
-            $i = 1;
-            foreach ($followList as $uid) {
-                $stmt->bindValue($i++, $uid, PDO::PARAM_STR);
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
             }
-            $stmt->bindValue($i++, $itemsPerPage, PDO::PARAM_INT);
-            $stmt->bindValue($i++, $offset, PDO::PARAM_INT);
+            $offset = ($pageNumber - 1) * $itemsPerPage;
 
-            $stmt->execute();
-            $messages = $stmt->fetchAll(PDO::FETCH_ASSOC);
-        }else{
-            $messages = [];
-        }
-        
-        // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-        $messages = getDatasUeuse($pdo, $messages);
-        //adsystem------------------
+            $followList = getFolloweeList($pdo, $userId);
+            $messages = array(); // 初期化
 
-        $message['ads'] = "false";
+            // 空ならエラー回避
+            if (!(empty($followList))){
+                $placeholders = implode(',', array_fill(0, count($followList), '?'));
 
-        $today = date("Y-m-d H:i:s");
+                $sql = "SELECT ueuse.* 
+                        FROM ueuse 
+                        LEFT JOIN account ON ueuse.account = account.userid 
+                        WHERE ueuse.rpuniqid = '' 
+                        AND account.role != 'ice' 
+                        AND ueuse.account IN ($placeholders)
+                        ORDER BY ueuse.datetime DESC 
+                        LIMIT ? OFFSET ?";
 
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if(!(empty($adsresult))){
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
+                $stmt = $pdo->prepare($sql);
 
-        $ueuseItems = array();
-        if(!empty($messages)){
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+                $i = 1;
+                foreach ($followList as $uid) {
+                    $stmt->bindValue($i++, $uid, PDO::PARAM_STR);
                 }
-            }
+                $stmt->bindValue($i++, $itemsPerPage, PDO::PARAM_INT);
+                $stmt->bindValue($i++, $offset, PDO::PARAM_INT);
 
-            if($message['ads'] === "true"){
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
-                );
+                $stmt->execute();
+                $messages = $stmt->fetchAll(PDO::FETCH_ASSOC);
             }else{
-                $adsystem = null;
+                $messages = [];
             }
+            
+            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+            $messages = getDatasUeuse($pdo, $messages);
+            //adsystem------------------
 
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-    
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }
+            $message['ads'] = "false";
+
+            $today = date("Y-m-d H:i:s");
+
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if(!(empty($adsresult))){
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
+
+            $ueuseItems = array();
+            if(!empty($messages)){
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
+                    }
+                }
+
+                if($message['ads'] === "true"){
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                }else{
+                    $adsystem = null;
+                }
+
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
+                );
         
-        $pdo = null;
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }else{
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }
+            
+            $pdo = null;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/foryoutimeline.php b/nextpage/foryoutimeline.php
index f85fe4d..734e023 100644
--- a/nextpage/foryoutimeline.php
+++ b/nextpage/foryoutimeline.php
@@ -14,259 +14,262 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
-        }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
-
-        $messages = array();
-
-        $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
-        
-        //------------------------------------------すべてのユーズを取得----------------------------------------------
-        $all_sql = "SELECT ueuse.* 
-                FROM ueuse 
-                LEFT JOIN account ON ueuse.account = account.userid 
-                WHERE ueuse.rpuniqid = '' AND account.role != 'ice' {$blocked_accounts['sql']} 
-                ORDER BY ueuse.datetime DESC 
-                LIMIT :offset, :itemsPerPage";
-
-        $all_stmt = $pdo->prepare($all_sql);
-        foreach ($blocked_accounts['params'] as $ph => $val) {
-            $all_stmt->bindValue($ph, $val, PDO::PARAM_STR);
-        }
-        $all_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
-        $all_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-        $all_stmt->execute();
-
-        $all_messages = $all_stmt->fetchAll(PDO::FETCH_ASSOC);
-        if(empty($all_messages)){
-            $all_messages = [];
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
 
-        //------------------------------------------人気なユーズを取得(バズってるやつ)----------------------------------------------
-        $day_count_sql = "SELECT ueuse.* 
-                FROM ueuse 
-                LEFT JOIN account ON ueuse.account = account.userid 
-                WHERE ueuse.datetime >= NOW() - INTERVAL 7 DAY AND ueuse.rpuniqid = '' AND account.role != 'ice' 
-                ORDER BY ueuse.datetime DESC 
-                LIMIT 1000";
-        $cnt_stmt = $pdo->prepare($day_count_sql);
-        $Before7daysPosts = $cnt_stmt->fetchAll(PDO::FETCH_ASSOC);
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-        // 結果が15件に満たない場合
-        $postCount = count($Before7daysPosts);
-        if($postCount < 15){
-            $get_day = 90;
-        }elseif($postCount > 15 && $postCount < 150){
-            $get_day = 31;
-        }elseif($postCount > 150 && $postCount < 750){
-            $get_day = 7;
-        }elseif($postCount > 750){
-            $get_day = 5;
-        }else{
-            $get_day = 2;
-        }
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
+            }
+            $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        $get_day = $get_day * (2 ** floor($pageNumber / 3));
+            $messages = array();
 
-        $pop_sql = "SELECT 
-                    ueuse.*
-                FROM 
-                    ueuse
-                LEFT JOIN account ON ueuse.account = account.userid 
-                WHERE 
-                    ueuse.datetime >= NOW() - INTERVAL :getday DAY 
-                AND 
-                    ueuse.rpuniqid = '' 
-                AND 
-                    account.role != 'ice' 
-                {$blocked_accounts['sql']} 
-                ORDER BY 
-                    ueuse.popularity DESC
-                LIMIT :offset, :itemsPerPage;
-            ";
-
-        $pop_stmt = $pdo->prepare($pop_sql);
-        foreach ($blocked_accounts['params'] as $ph => $val) {
-            $pop_stmt->bindValue($ph, $val, PDO::PARAM_STR);
-        }
-        $pop_stmt->bindValue(':getday', $get_day, PDO::PARAM_INT);
-        $pop_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
-        $pop_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-        $pop_stmt->execute();
-
-        $pop_messages = $pop_stmt->fetchAll(PDO::FETCH_ASSOC);
-        if(empty($pop_messages)){
-            $pop_messages = [];
-        }
-
-        //------------------------------------------フォローしているユーザーから取得----------------------------------------------
-        $followList = getFolloweeList($pdo, $userId);
-
-        foreach ($followList as $followUserId) {
-            $flw_sql = "SELECT ueuse.* 
+            $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
+            
+            //------------------------------------------すべてのユーズを取得----------------------------------------------
+            $all_sql = "SELECT ueuse.* 
                     FROM ueuse 
                     LEFT JOIN account ON ueuse.account = account.userid 
-                    WHERE ueuse.rpuniqid = '' AND account.role != 'ice' AND ueuse.account = :follow_account AND ueuse.datetime >= NOW() - INTERVAL :getday DAY {$blocked_accounts['sql']} 
+                    WHERE ueuse.rpuniqid = '' AND account.role != 'ice' {$blocked_accounts['sql']} 
                     ORDER BY ueuse.datetime DESC 
                     LIMIT :offset, :itemsPerPage";
 
-            $flw_stmt = $pdo->prepare($flw_sql);
+            $all_stmt = $pdo->prepare($all_sql);
             foreach ($blocked_accounts['params'] as $ph => $val) {
-                $flw_stmt->bindValue($ph, $val, PDO::PARAM_STR);
+                $all_stmt->bindValue($ph, $val, PDO::PARAM_STR);
             }
-            $flw_stmt->bindValue(':getday', $get_day, PDO::PARAM_INT);
-            $flw_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
-            $flw_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-            $flw_stmt->bindValue(':follow_account', $followUserId, PDO::PARAM_STR);
-            $flw_stmt->execute();
+            $all_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
+            $all_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+            $all_stmt->execute();
 
-            while ($row = $flw_stmt->fetch(PDO::FETCH_ASSOC)) {
-                $flw_messages[] = $row;
+            $all_messages = $all_stmt->fetchAll(PDO::FETCH_ASSOC);
+            if(empty($all_messages)){
+                $all_messages = [];
             }
-        }
-        if(!(empty($flw_messages))){
-            usort($flw_messages, function($a, $b) {
-                return strtotime($b['datetime']) - strtotime($a['datetime']);
-            });
-        }else{
-            $flw_messages = [];
-        }
 
-        //------------------------------------------いいねやリユーズを頻繁にするような好きっぽそうなユーザーの投稿を取得--------------------------------------
-        $fav_sql = "SELECT ueuse.*,
-                            (LENGTH(ueuse.favorite) - LENGTH(REPLACE(ueuse.favorite, ',', '')) - 1) AS favorite_count
-                        FROM ueuse
-                        WHERE FIND_IN_SET(:userid, ueuse.favorite) > 0 
-                        ORDER BY ueuse.datetime DESC
-                        LIMIT 100
-                    ";
-        $fav_stmt = $pdo->prepare($fav_sql);
-        $fav_stmt->bindValue(':userid', $userId, PDO::PARAM_STR);
-        $fav_stmt->execute();
-        $fav_ueuse_lists = $fav_stmt->fetchAll(PDO::FETCH_ASSOC);
+            //------------------------------------------人気なユーズを取得(バズってるやつ)----------------------------------------------
+            $day_count_sql = "SELECT ueuse.* 
+                    FROM ueuse 
+                    LEFT JOIN account ON ueuse.account = account.userid 
+                    WHERE ueuse.datetime >= NOW() - INTERVAL 7 DAY AND ueuse.rpuniqid = '' AND account.role != 'ice' 
+                    ORDER BY ueuse.datetime DESC 
+                    LIMIT 1000";
+            $cnt_stmt = $pdo->prepare($day_count_sql);
+            $Before7daysPosts = $cnt_stmt->fetchAll(PDO::FETCH_ASSOC);
 
-        if (!empty($fav_ueuse_lists)) {
-            $many_fav_accounts = array_column($fav_ueuse_lists, 'account');
-            $many_fav_account_counts = array_count_values($many_fav_accounts);
-            arsort($many_fav_account_counts);
-            $top_fav_accounts = array_slice($many_fav_account_counts, 0, 15, true);
+            // 結果が15件に満たない場合
+            $postCount = count($Before7daysPosts);
+            if($postCount < 15){
+                $get_day = 90;
+            }elseif($postCount > 15 && $postCount < 150){
+                $get_day = 31;
+            }elseif($postCount > 150 && $postCount < 750){
+                $get_day = 7;
+            }elseif($postCount > 750){
+                $get_day = 5;
+            }else{
+                $get_day = 2;
+            }
 
-            $favget_messages = [];
-            $favget_sql = "SELECT ueuse.* 
+            $get_day = $get_day * (2 ** floor($pageNumber / 3));
+
+            $pop_sql = "SELECT 
+                        ueuse.*
+                    FROM 
+                        ueuse
+                    LEFT JOIN account ON ueuse.account = account.userid 
+                    WHERE 
+                        ueuse.datetime >= NOW() - INTERVAL :getday DAY 
+                    AND 
+                        ueuse.rpuniqid = '' 
+                    AND 
+                        account.role != 'ice' 
+                    {$blocked_accounts['sql']} 
+                    ORDER BY 
+                        ueuse.popularity DESC
+                    LIMIT :offset, :itemsPerPage;
+                ";
+
+            $pop_stmt = $pdo->prepare($pop_sql);
+            foreach ($blocked_accounts['params'] as $ph => $val) {
+                $pop_stmt->bindValue($ph, $val, PDO::PARAM_STR);
+            }
+            $pop_stmt->bindValue(':getday', $get_day, PDO::PARAM_INT);
+            $pop_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
+            $pop_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+            $pop_stmt->execute();
+
+            $pop_messages = $pop_stmt->fetchAll(PDO::FETCH_ASSOC);
+            if(empty($pop_messages)){
+                $pop_messages = [];
+            }
+
+            //------------------------------------------フォローしているユーザーから取得----------------------------------------------
+            $followList = getFolloweeList($pdo, $userId);
+
+            foreach ($followList as $followUserId) {
+                $flw_sql = "SELECT ueuse.* 
                         FROM ueuse 
                         LEFT JOIN account ON ueuse.account = account.userid 
-                        WHERE ueuse.rpuniqid = '' AND account.role != 'ice' AND ueuse.account = :fav_account AND ueuse.datetime >= NOW() - INTERVAL :getday DAY {$blocked_accounts['sql']} 
+                        WHERE ueuse.rpuniqid = '' AND account.role != 'ice' AND ueuse.account = :follow_account AND ueuse.datetime >= NOW() - INTERVAL :getday DAY {$blocked_accounts['sql']} 
                         ORDER BY ueuse.datetime DESC 
                         LIMIT :offset, :itemsPerPage";
 
-            $favget_stmt = $pdo->prepare($favget_sql);
-            foreach ($blocked_accounts['params'] as $ph => $val) {
-                $favget_stmt->bindValue($ph, $val, PDO::PARAM_STR);
-            }
-            $favget_stmt->bindValue(':getday', $get_day, PDO::PARAM_INT);
-            $favget_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
-            $favget_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+                $flw_stmt = $pdo->prepare($flw_sql);
+                foreach ($blocked_accounts['params'] as $ph => $val) {
+                    $flw_stmt->bindValue($ph, $val, PDO::PARAM_STR);
+                }
+                $flw_stmt->bindValue(':getday', $get_day, PDO::PARAM_INT);
+                $flw_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
+                $flw_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+                $flw_stmt->bindValue(':follow_account', $followUserId, PDO::PARAM_STR);
+                $flw_stmt->execute();
 
-            foreach ($top_fav_accounts as $favUserId => $count) {
-                $favget_stmt->bindValue(':fav_account', $favUserId, PDO::PARAM_STR);
-                $favget_stmt->execute();
-                $favget_messages = array_merge($favget_messages, $favget_stmt->fetchAll(PDO::FETCH_ASSOC));
-            }
-        } else {
-            $favget_messages = [];
-        }
-
-        // 基本的には人気・フォロー中・いいねする事が多いユーザーのユーズでTLを構成するけど全部出きったらLTLと同じにする
-        $messages = array_merge($pop_messages, $flw_messages, $favget_messages);
-        if (empty($messages)) {
-            $messages = $all_messages;
-        } elseif (count($messages) < 15) {
-            $messages = array_merge($messages, $all_messages);
-        }
-        $messages = array_slice(array_unique($messages, SORT_REGULAR), 0, 15);
-        shuffle($messages);
-
-        // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-        $messages = getDatasUeuse($pdo, $messages);
-        //adsystem------------------
-
-        $message['ads'] = "false";
-
-        $today = date("Y-m-d H:i:s");
-
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if(!(empty($adsresult))){
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
-
-        $ueuseItems = array();
-        if(!empty($messages)){
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+                while ($row = $flw_stmt->fetch(PDO::FETCH_ASSOC)) {
+                    $flw_messages[] = $row;
                 }
             }
-
-            if($message['ads'] === "true"){
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
-                );
+            if(!(empty($flw_messages))){
+                usort($flw_messages, function($a, $b) {
+                    return strtotime($b['datetime']) - strtotime($a['datetime']);
+                });
             }else{
-                $adsystem = null;
+                $flw_messages = [];
             }
 
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-    
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }
+            //------------------------------------------いいねやリユーズを頻繁にするような好きっぽそうなユーザーの投稿を取得--------------------------------------
+            $fav_sql = "SELECT ueuse.*,
+                                (LENGTH(ueuse.favorite) - LENGTH(REPLACE(ueuse.favorite, ',', '')) - 1) AS favorite_count
+                            FROM ueuse
+                            WHERE FIND_IN_SET(:userid, ueuse.favorite) > 0 
+                            ORDER BY ueuse.datetime DESC
+                            LIMIT 100
+                        ";
+            $fav_stmt = $pdo->prepare($fav_sql);
+            $fav_stmt->bindValue(':userid', $userId, PDO::PARAM_STR);
+            $fav_stmt->execute();
+            $fav_ueuse_lists = $fav_stmt->fetchAll(PDO::FETCH_ASSOC);
+
+            if (!empty($fav_ueuse_lists)) {
+                $many_fav_accounts = array_column($fav_ueuse_lists, 'account');
+                $many_fav_account_counts = array_count_values($many_fav_accounts);
+                arsort($many_fav_account_counts);
+                $top_fav_accounts = array_slice($many_fav_account_counts, 0, 15, true);
+
+                $favget_messages = [];
+                $favget_sql = "SELECT ueuse.* 
+                            FROM ueuse 
+                            LEFT JOIN account ON ueuse.account = account.userid 
+                            WHERE ueuse.rpuniqid = '' AND account.role != 'ice' AND ueuse.account = :fav_account AND ueuse.datetime >= NOW() - INTERVAL :getday DAY {$blocked_accounts['sql']} 
+                            ORDER BY ueuse.datetime DESC 
+                            LIMIT :offset, :itemsPerPage";
+
+                $favget_stmt = $pdo->prepare($favget_sql);
+                foreach ($blocked_accounts['params'] as $ph => $val) {
+                    $favget_stmt->bindValue($ph, $val, PDO::PARAM_STR);
+                }
+                $favget_stmt->bindValue(':getday', $get_day, PDO::PARAM_INT);
+                $favget_stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
+                $favget_stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+
+                foreach ($top_fav_accounts as $favUserId => $count) {
+                    $favget_stmt->bindValue(':fav_account', $favUserId, PDO::PARAM_STR);
+                    $favget_stmt->execute();
+                    $favget_messages = array_merge($favget_messages, $favget_stmt->fetchAll(PDO::FETCH_ASSOC));
+                }
+            } else {
+                $favget_messages = [];
+            }
+
+            // 基本的には人気・フォロー中・いいねする事が多いユーザーのユーズでTLを構成するけど全部出きったらLTLと同じにする
+            $messages = array_merge($pop_messages, $flw_messages, $favget_messages);
+            if (empty($messages)) {
+                $messages = $all_messages;
+            } elseif (count($messages) < 15) {
+                $messages = array_merge($messages, $all_messages);
+            }
+            $messages = array_slice(array_unique($messages, SORT_REGULAR), 0, 15);
+            shuffle($messages);
+
+            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+            $messages = getDatasUeuse($pdo, $messages);
+            //adsystem------------------
+
+            $message['ads'] = "false";
+
+            $today = date("Y-m-d H:i:s");
+
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if(!(empty($adsresult))){
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
+
+            $ueuseItems = array();
+            if(!empty($messages)){
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
+                    }
+                }
+
+                if($message['ads'] === "true"){
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                }else{
+                    $adsystem = null;
+                }
+
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
+                );
         
-        $pdo = null;
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }else{
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }
+            
+            $pdo = null;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/localtimeline.php b/nextpage/localtimeline.php
index 7e17b9a..d9c8508 100644
--- a/nextpage/localtimeline.php
+++ b/nextpage/localtimeline.php
@@ -14,118 +14,121 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
-        }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
-
-        $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
-
-        $messages = array();
-        
-        $sql = "SELECT ueuse.* 
-                FROM ueuse 
-                LEFT JOIN account ON ueuse.account = account.userid 
-                WHERE ueuse.rpuniqid = '' AND account.role != 'ice' {$blocked_accounts['sql']} 
-                ORDER BY ueuse.datetime DESC 
-                LIMIT :offset, :itemsPerPage";
-
-        $stmt = $pdo->prepare($sql);
-        
-        foreach ($blocked_accounts['params'] as $ph => $val) {
-            $stmt->bindValue($ph, $val, PDO::PARAM_STR);
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
 
-        $stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
-        $stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-        $stmt->execute();
-        $message_array = $stmt;
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-        while ($row = $message_array->fetch(PDO::FETCH_ASSOC)) {
-            $messages[] = $row;
-        }
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
+            }
+            $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+            $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
 
-        $messages = getDatasUeuse($pdo, $messages);
+            $messages = array();
+            
+            $sql = "SELECT ueuse.* 
+                    FROM ueuse 
+                    LEFT JOIN account ON ueuse.account = account.userid 
+                    WHERE ueuse.rpuniqid = '' AND account.role != 'ice' {$blocked_accounts['sql']} 
+                    ORDER BY ueuse.datetime DESC 
+                    LIMIT :offset, :itemsPerPage";
 
-        //adsystem------------------
+            $stmt = $pdo->prepare($sql);
+            
+            foreach ($blocked_accounts['params'] as $ph => $val) {
+                $stmt->bindValue($ph, $val, PDO::PARAM_STR);
+            }
 
-        $message['ads'] = "false";
+            $stmt->bindValue(':offset', $offset, PDO::PARAM_INT);
+            $stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+            $stmt->execute();
+            $message_array = $stmt;
 
-        $today = date("Y-m-d H:i:s");
+            while ($row = $message_array->fetch(PDO::FETCH_ASSOC)) {
+                $messages[] = $row;
+            }
 
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if(!(empty($adsresult))){
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
+            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
 
-        $ueuseItems = array();
-        if(!empty($messages)){
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+            $messages = getDatasUeuse($pdo, $messages);
+
+            //adsystem------------------
+
+            $message['ads'] = "false";
+
+            $today = date("Y-m-d H:i:s");
+
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if(!(empty($adsresult))){
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
+
+            $ueuseItems = array();
+            if(!empty($messages)){
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
+                    }
                 }
-            }
 
-            if($message['ads'] === "true"){
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
+                if($message['ads'] === "true"){
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                }else{
+                    $adsystem = null;
+                }
+
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
                 );
-            }else{
-                $adsystem = null;
-            }
-
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-    
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }
         
-        $pdo = null;
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }else{
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }
+            
+            $pdo = null;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/notification.php b/nextpage/notification.php
index 3fca8c7..6af0ca0 100644
--- a/nextpage/notification.php
+++ b/nextpage/notification.php
@@ -29,115 +29,118 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
+    }elseif(is_sameUserid($userid, $is_login["userid"]) === true){
+        $myblocklist = getUserData($pdo, $userid)["blocklist"];
 
-    $myblocklist = getUserData($pdo, $userid)["blocklist"];
+        $itemsPerPage = 15; // 1ページあたりの投稿数
+        $pageNumber = safetext(isset($_POST['page'])) ? safetext(intval($_POST['page'])) : 1;
+        if ($pageNumber <= 0 || (!(is_numeric($pageNumber)))) {
+            $pageNumber = 1;
+        }
+        $offset = ($pageNumber - 1) * $itemsPerPage;
 
-    $itemsPerPage = 15; // 1ページあたりの投稿数
-    $pageNumber = safetext(isset($_POST['page'])) ? safetext(intval($_POST['page'])) : 1;
-    if ($pageNumber <= 0 || (!(is_numeric($pageNumber)))) {
-        $pageNumber = 1;
-    }
-    $offset = ($pageNumber - 1) * $itemsPerPage;
+        $messages = array();
 
-    $messages = array();
+        if (!empty($pdo)) {
+            $messageQuery = $pdo->prepare("SELECT fromuserid,title,msg,url,datetime,userchk FROM notification WHERE touserid = :userid ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
+            $messageQuery->bindValue(':userid', $userid, PDO::PARAM_STR);
+            $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+            $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+            $messageQuery->execute();
+            $message_array = $messageQuery->fetchAll();
 
-    if (!empty($pdo)) {
-        $messageQuery = $pdo->prepare("SELECT fromuserid,title,msg,url,datetime,userchk FROM notification WHERE touserid = :userid ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
-        $messageQuery->bindValue(':userid', $userid, PDO::PARAM_STR);
-        $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-        $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-        $messageQuery->execute();
-        $message_array = $messageQuery->fetchAll();
+            // トランザクション開始
+            $pdo->beginTransaction();
 
-        // トランザクション開始
-        $pdo->beginTransaction();
+            // SQL作成
+            $stmt = $pdo->prepare("UPDATE notification SET userchk = 'done' WHERE touserid = :userid;");
 
-        // SQL作成
-        $stmt = $pdo->prepare("UPDATE notification SET userchk = 'done' WHERE touserid = :userid;");
+            $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
 
-        $stmt->bindValue(':userid', $userid, PDO::PARAM_STR);
+            $res = $stmt->execute();
+            $res = $pdo->commit();
 
-        $res = $stmt->execute();
-        $res = $pdo->commit();
-
-        if (!empty($message_array)) {
-            foreach ($message_array as $value) {
-                $value["servericon"] = safetext($serversettings["serverinfo"]["server_icon"]);
-                if (!(empty($value['fromuserid']))) {
-                    if (!($value['fromuserid'] == "uwuzu-fromsys")) {
-                        $userQuery = $pdo->prepare("SELECT username,iconname FROM account WHERE userid = :userid");
-                        $userQuery->bindValue(':userid', $value['fromuserid']);
-                        $userQuery->execute();
-                        $user_array = $userQuery->fetch();
-                        if (!(empty($user_array))) {
-                            $value['fromusericon'] = filter_var($user_array["iconname"], FILTER_VALIDATE_URL) ? $user_array["iconname"] : "../" . $user_array["iconname"];
-                            $value['fromusername'] = $user_array["username"];
-                        } else {
-                            $value['fromusericon'] = "../img/deficon/icon.png";
-                            $value['fromusername'] = "でふぉると";
-                        }
-                    }else{
-                        if(!empty($value["servericon"])){
-                            $value['fromusericon'] = safetext($value["servericon"]);
-                            $value['fromusername'] = "uwuzu";
+            if (!empty($message_array)) {
+                foreach ($message_array as $value) {
+                    $value["servericon"] = safetext($serversettings["serverinfo"]["server_icon"]);
+                    if (!(empty($value['fromuserid']))) {
+                        if (!($value['fromuserid'] == "uwuzu-fromsys")) {
+                            $userQuery = $pdo->prepare("SELECT username,iconname FROM account WHERE userid = :userid");
+                            $userQuery->bindValue(':userid', $value['fromuserid']);
+                            $userQuery->execute();
+                            $user_array = $userQuery->fetch();
+                            if (!(empty($user_array))) {
+                                $value['fromusericon'] = filter_var($user_array["iconname"], FILTER_VALIDATE_URL) ? $user_array["iconname"] : "../" . $user_array["iconname"];
+                                $value['fromusername'] = $user_array["username"];
+                            } else {
+                                $value['fromusericon'] = "../img/deficon/icon.png";
+                                $value['fromusername'] = "でふぉると";
+                            }
                         }else{
-                            $value['fromusericon'] = "../img/uwuzuicon.png";
-                            $value['fromusername'] = "uwuzu";
+                            if(!empty($value["servericon"])){
+                                $value['fromusericon'] = safetext($value["servericon"]);
+                                $value['fromusername'] = "uwuzu";
+                            }else{
+                                $value['fromusericon'] = "../img/uwuzuicon.png";
+                                $value['fromusername'] = "uwuzu";
+                            }
                         }
                     }
+
+                    if($value["userchk"] === "done"){
+                        $value["userchk"] = true;
+                    }else{
+                        $value["userchk"] = false;
+                    }
+
+                    $formatted = [
+                        "type" => "notification",
+                        "datetime" => $value["datetime"],
+                        "userid" => $value["fromuserid"],
+                        "userdata" => [
+                            "userid" => $value["fromuserid"],
+                            "username" => $value["fromusername"],
+                            "iconurl" => $value['fromusericon'],
+                        ],
+                        "message" => $value["msg"],
+                        "url" => $value["url"],
+                        "title" => $value["title"],
+                        "is_read" => $value["userchk"],
+                    ];
+
+                    if ($formatted !== null) {
+                        $notificationItems[] = $formatted;
+                    }
                 }
 
-                if($value["userchk"] === "done"){
-                    $value["userchk"] = true;
-                }else{
-                    $value["userchk"] = false;
-                }
+                $item = array(
+                    "success" => true,
+                    "notifications" => $notificationItems
+                );
 
-                $formatted = [
-                    "type" => "notification",
-                    "datetime" => $value["datetime"],
-                    "userid" => $value["fromuserid"],
-                    "userdata" => [
-                        "userid" => $value["fromuserid"],
-                        "username" => $value["fromusername"],
-                        "iconurl" => $value['fromusericon'],
-                    ],
-                    "message" => $value["msg"],
-                    "url" => $value["url"],
-                    "title" => $value["title"],
-                    "is_read" => $value["userchk"],
-                ];
-
-                if ($formatted !== null) {
-                    $notificationItems[] = $formatted;
-                }
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            } else {
+                $item = array(
+                    "success" => false,
+                    "notifications" => null,
+                    "error" => "no_notification",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
             }
 
-            $item = array(
-                "success" => true,
-                "notifications" => $notificationItems
-            );
 
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            $pdo = null;
         } else {
             $item = array(
                 "success" => false,
                 "notifications" => null,
-                "error" => "no_notification",
+                "error" => "bad_request",
             );
             echo json_encode($item, JSON_UNESCAPED_UNICODE);
         }
-
-
-        $pdo = null;
-    } else {
-        $item = array(
-            "success" => false,
-            "notifications" => null,
-            "error" => "bad_request",
-        );
-        echo json_encode($item, JSON_UNESCAPED_UNICODE);
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 } else {
     $item = array(
diff --git a/nextpage/searchtimeline.php b/nextpage/searchtimeline.php
index ca30f9e..24b04bd 100644
--- a/nextpage/searchtimeline.php
+++ b/nextpage/searchtimeline.php
@@ -15,156 +15,174 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        $messages = array();
-        
-        if (!empty($keyword)) {
-            $aduserinfoQuery = $pdo->prepare("SELECT username,userid,loginid,admin,role,sacinfo,blocklist,bookmark FROM account WHERE userid = :userid");
-            $aduserinfoQuery->bindValue(':userid', safetext($userId));
-            $aduserinfoQuery->execute();
-            $res = $aduserinfoQuery->fetch();
-            $myblocklist = safetext($res["blocklist"]);
-            $mybookmark = safetext($res["bookmark"]);
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-            $keywordPattern = '/from:@(\w+)\s+(.+)/';
-            if (preg_match($keywordPattern, $keyword, $matches)) {
-                $username = $matches[1];
-                $searchKeyword = $matches[2];
-
-                $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE account = :username AND (ueuse LIKE :searchKeyword OR abi LIKE :searchKeyword) ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
-                $messageQuery->bindValue(':username', $username, PDO::PARAM_STR);
-                $messageQuery->bindValue(':searchKeyword', '%' . $searchKeyword . '%', PDO::PARAM_STR);
-                $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-                $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-                $messageQuery->execute();
-                $message_array = $messageQuery->fetchAll();
-            } else {
-                $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE ueuse LIKE :keyword OR abi LIKE :keyword ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
-                $messageQuery->bindValue(':keyword', '%' . $keyword . '%', PDO::PARAM_STR);
-                $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-                $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-                $messageQuery->execute();
-                $message_array = $messageQuery->fetchAll();
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
             }
+            $offset = ($pageNumber - 1) * $itemsPerPage;
 
-            $user_keyword = str_replace('@', '', $keyword);
-            $usersQuery = $pdo->prepare("SELECT * FROM account WHERE username LIKE :keyword OR userid LIKE :keyword OR profile LIKE :keyword ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
-            $usersQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-            $usersQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-            $usersQuery->bindValue(':keyword', '%' . $user_keyword . '%', PDO::PARAM_STR);
-            $usersQuery->execute();
-            $users_array = $usersQuery->fetchAll();
-
-            $users = array();
-            foreach ($users_array as $row) {
-                $users[] = $row;
-            }
-                
             $messages = array();
-            foreach ($message_array as $row) {
-                $messages[] = $row;
-            }
+            
+            if (!empty($keyword)) {
+                $aduserinfoQuery = $pdo->prepare("SELECT username,userid,loginid,admin,role,sacinfo,blocklist,bookmark FROM account WHERE userid = :userid");
+                $aduserinfoQuery->bindValue(':userid', safetext($userId));
+                $aduserinfoQuery->execute();
+                $res = $aduserinfoQuery->fetch();
+                $myblocklist = safetext($res["blocklist"]);
+                $mybookmark = safetext($res["bookmark"]);
 
-            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-            $messages = getDatasUeuse($pdo, $messages);
-            //adsystem------------------
+                $keywordPattern = '/from:@(\w+)\s+(.+)/';
+                if (preg_match($keywordPattern, $keyword, $matches)) {
+                    $username = $matches[1];
+                    $searchKeyword = $matches[2];
 
-            $message['ads'] = "false";
-
-            $today = date("Y-m-d H:i:s");
-
-            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-            $adsQuery->bindValue(':today', $today);
-            $adsQuery->execute();
-            $adsresult = $adsQuery->fetch();
-            if(!(empty($adsresult))){
-                $message['ads'] = "true";
-                $message['ads_url'] = $adsresult["url"];
-                $message['ads_img_url'] = $adsresult["image_url"];
-                $message['ads_memo'] = $adsresult["memo"];
-            }
-            //--------------------------
-            $ueuseItems = array();
-            if(!empty($messages)){
-                foreach ($messages as $value) {
-                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                    if ($formatted !== null) {
-                        $ueuseItems[] = $formatted;
-                    }
+                    $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE account = :username AND (ueuse LIKE :searchKeyword OR abi LIKE :searchKeyword) ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
+                    $messageQuery->bindValue(':username', $username, PDO::PARAM_STR);
+                    $messageQuery->bindValue(':searchKeyword', '%' . $searchKeyword . '%', PDO::PARAM_STR);
+                    $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+                    $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+                    $messageQuery->execute();
+                    $message_array = $messageQuery->fetchAll();
+                } else {
+                    $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE ueuse LIKE :keyword OR abi LIKE :keyword ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
+                    $messageQuery->bindValue(':keyword', '%' . $keyword . '%', PDO::PARAM_STR);
+                    $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+                    $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+                    $messageQuery->execute();
+                    $message_array = $messageQuery->fetchAll();
                 }
 
-                if($message['ads'] === "true"){
-                    $adsystem = array(
-                        "type" => "Ads",
-                        "url" => $message['ads_url'],
-                        "imgurl" => $message['ads_img_url'],
-                        "memo" => $message['ads_memo'],
-                    );
+                $user_keyword = str_replace('@', '', $keyword);
+                $usersQuery = $pdo->prepare("SELECT * FROM account WHERE username LIKE :keyword OR userid LIKE :keyword OR profile LIKE :keyword ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
+                $usersQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+                $usersQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+                $usersQuery->bindValue(':keyword', '%' . $user_keyword . '%', PDO::PARAM_STR);
+                $usersQuery->execute();
+                $users_array = $usersQuery->fetchAll();
+
+                $users = array();
+                foreach ($users_array as $row) {
+                    $users[] = $row;
+                }
+                    
+                $messages = array();
+                foreach ($message_array as $row) {
+                    $messages[] = $row;
+                }
+
+                // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+                $messages = getDatasUeuse($pdo, $messages);
+                //adsystem------------------
+
+                $message['ads'] = "false";
+
+                $today = date("Y-m-d H:i:s");
+
+                $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+                $adsQuery->bindValue(':today', $today);
+                $adsQuery->execute();
+                $adsresult = $adsQuery->fetch();
+                if(!(empty($adsresult))){
+                    $message['ads'] = "true";
+                    $message['ads_url'] = $adsresult["url"];
+                    $message['ads_img_url'] = $adsresult["image_url"];
+                    $message['ads_memo'] = $adsresult["memo"];
+                }
+                //--------------------------
+                $ueuseItems = array();
+                if(!empty($messages)){
+                    foreach ($messages as $value) {
+                        $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                        if ($formatted !== null) {
+                            $ueuseItems[] = $formatted;
+                        }
+                    }
+
+                    if($message['ads'] === "true"){
+                        $adsystem = array(
+                            "type" => "Ads",
+                            "url" => $message['ads_url'],
+                            "imgurl" => $message['ads_img_url'],
+                            "memo" => $message['ads_memo'],
+                        );
+                    }else{
+                        $adsystem = null;
+                    }
                 }else{
                     $adsystem = null;
                 }
-            }else{
-                $adsystem = null;
-            }
 
-            $userItems = array();
-            if(!empty($users)){
-                foreach ($users as $value) {
-                    $followerCount = count(getFollowerList($pdo, $value["userid"]));
-                    $followCount = count(getFolloweeList($pdo, $value["userid"]));
+                $userItems = array();
+                if(!empty($users)){
+                    foreach ($users as $value) {
+                        $followerCount = count(getFollowerList($pdo, $value["userid"]));
+                        $followCount = count(getFolloweeList($pdo, $value["userid"]));
 
-                    $user = array(
-                        "type" => "User",
-                        "userid" => $value["userid"],
-                        "userdata" => array(
+                        $user = array(
+                            "type" => "User",
                             "userid" => $value["userid"],
-                            "username" => $value["username"],
-                            "headurl" => filter_var($value['headname'], FILTER_VALIDATE_URL) 
-                                                ? $value['headname'] 
-                                                : "../" . $value['headname'],
-                            "iconurl" => filter_var($value['iconname'], FILTER_VALIDATE_URL) 
-                                                ? $value['iconname'] 
-                                                : "../" . $value['iconname'],
-                            "role" => $value["role"],
-                            "sacinfo" => $value["sacinfo"],
-                            "follower_cnt" => $followerCount,
-                            "follow_cnt" => $followCount,
-                            "datetime" => $value["datetime"],
-                            "profile" => $value["profile"],
-                        ),
-                    );
+                            "userdata" => array(
+                                "userid" => $value["userid"],
+                                "username" => $value["username"],
+                                "headurl" => filter_var($value['headname'], FILTER_VALIDATE_URL) 
+                                                    ? $value['headname'] 
+                                                    : "../" . $value['headname'],
+                                "iconurl" => filter_var($value['iconname'], FILTER_VALIDATE_URL) 
+                                                    ? $value['iconname'] 
+                                                    : "../" . $value['iconname'],
+                                "role" => $value["role"],
+                                "sacinfo" => $value["sacinfo"],
+                                "follower_cnt" => $followerCount,
+                                "follow_cnt" => $followCount,
+                                "datetime" => $value["datetime"],
+                                "profile" => $value["profile"],
+                            ),
+                        );
 
-                    $userItems[] = $user;
+                        $userItems[] = $user;
+                    }
                 }
-            }
 
-            $ueuses = array_merge($userItems, $ueuseItems);
-            if (empty($ueuses)) {
+                $ueuses = array_merge($userItems, $ueuseItems);
+                if (empty($ueuses)) {
+                    $item = array(
+                        "success" => false,
+                        "ueuses" => null,
+                        "ads" => null,
+                        "error" => "no_ueuse",
+                    );
+                    echo json_encode($item, JSON_UNESCAPED_UNICODE);
+                }else{
+                    $item = array(
+                        "success" => true,
+                        "ueuses" => $ueuses,
+                        "ads" => $adsystem,
+                    );
+            
+                    echo json_encode($item, JSON_UNESCAPED_UNICODE); 
+                }
+            
+                $pdo = null;
+            }else{
                 $item = array(
                     "success" => false,
                     "ueuses" => null,
@@ -172,26 +190,11 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
                     "error" => "no_ueuse",
                 );
                 echo json_encode($item, JSON_UNESCAPED_UNICODE);
-            }else{
-                $item = array(
-                    "success" => true,
-                    "ueuses" => $ueuses,
-                    "ads" => $adsystem,
-                );
-        
-                echo json_encode($item, JSON_UNESCAPED_UNICODE); 
             }
-        
-            $pdo = null;
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
         }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/ueusetimeline.php b/nextpage/ueusetimeline.php
index 7b46d19..6a59873 100644
--- a/nextpage/ueusetimeline.php
+++ b/nextpage/ueusetimeline.php
@@ -15,134 +15,137 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    if(empty($uniqid)){
-        echo json_encode(['success' => false, 'error' => 'no_ueuse']);
-        exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        if(empty($uniqid)){
+            echo json_encode(['success' => false, 'error' => 'no_ueuse']);
+            exit;
         }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        $messages = array();
-        $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
-        
-        $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE (uniqid = :ueuseid OR rpuniqid = :rpueuseid) {$blocked_accounts['sql']} ORDER BY datetime ASC LIMIT :offset, :itemsPerPage");
-        foreach ($blocked_accounts['params'] as $ph => $val) {
-            $messageQuery->bindValue($ph, $val, PDO::PARAM_STR);
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
-        $messageQuery->bindValue(':ueuseid', $uniqid, PDO::PARAM_STR);
-        $messageQuery->bindValue(':rpueuseid', $uniqid, PDO::PARAM_STR);
-        $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-        $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-        $messageQuery->execute();
-        $message_array = $messageQuery->fetchAll();    
+
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
+
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
+            }
+            $offset = ($pageNumber - 1) * $itemsPerPage;
+
+            $messages = array();
+            $blocked_accounts = sqlBlockAccountList('account', $myblocklist);
             
-        $messages = array();
+            $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE (uniqid = :ueuseid OR rpuniqid = :rpueuseid) {$blocked_accounts['sql']} ORDER BY datetime ASC LIMIT :offset, :itemsPerPage");
+            foreach ($blocked_accounts['params'] as $ph => $val) {
+                $messageQuery->bindValue($ph, $val, PDO::PARAM_STR);
+            }
+            $messageQuery->bindValue(':ueuseid', $uniqid, PDO::PARAM_STR);
+            $messageQuery->bindValue(':rpueuseid', $uniqid, PDO::PARAM_STR);
+            $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+            $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+            $messageQuery->execute();
+            $message_array = $messageQuery->fetchAll();    
+                
+            $messages = array();
 
-        foreach ($message_array as $row) {
-            if(!(empty($row["rpuniqid"]))){
-                if(!($row["rpuniqid"] == $uniqid)){
-                    $up_messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE uniqid = :ueuseid {$blocked_accounts['sql']} ORDER BY datetime ASC LIMIT :offset, :itemsPerPage");
-                    foreach ($blocked_accounts['params'] as $ph => $val) {
-                        $up_messageQuery->bindValue($ph, $val, PDO::PARAM_STR);
-                    }
-                    $up_messageQuery->bindValue(':ueuseid', $row["rpuniqid"]);
-                    $up_messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-                    $up_messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-                    $up_messageQuery->execute();
-                    $up_messageData = $up_messageQuery->fetchAll();
-                    if(!(empty($up_messageData))){
-                        foreach ($up_messageData as $up_row) {
-                            $up_row["up_uniqid"] = $up_row["uniqid"];
-                            $messages[] = $up_row;
+            foreach ($message_array as $row) {
+                if(!(empty($row["rpuniqid"]))){
+                    if(!($row["rpuniqid"] == $uniqid)){
+                        $up_messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE uniqid = :ueuseid {$blocked_accounts['sql']} ORDER BY datetime ASC LIMIT :offset, :itemsPerPage");
+                        foreach ($blocked_accounts['params'] as $ph => $val) {
+                            $up_messageQuery->bindValue($ph, $val, PDO::PARAM_STR);
+                        }
+                        $up_messageQuery->bindValue(':ueuseid', $row["rpuniqid"]);
+                        $up_messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+                        $up_messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+                        $up_messageQuery->execute();
+                        $up_messageData = $up_messageQuery->fetchAll();
+                        if(!(empty($up_messageData))){
+                            foreach ($up_messageData as $up_row) {
+                                $up_row["up_uniqid"] = $up_row["uniqid"];
+                                $messages[] = $up_row;
+                            }
                         }
                     }
                 }
+                $messages[] = $row;
             }
-            $messages[] = $row;
-        }
 
-        // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-        $messages = getDatasUeuse($pdo, $messages);
-        //adsystem------------------
+            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+            $messages = getDatasUeuse($pdo, $messages);
+            //adsystem------------------
 
-        $message['ads'] = "false";
+            $message['ads'] = "false";
 
-        $today = date("Y-m-d H:i:s");
+            $today = date("Y-m-d H:i:s");
 
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if(!(empty($adsresult))){
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if(!(empty($adsresult))){
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
 
-        $ueuseItems = array();
-        if(!empty($messages)){
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+            $ueuseItems = array();
+            if(!empty($messages)){
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
+                    }
                 }
-            }
 
-            if($message['ads'] === "true"){
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
+                if($message['ads'] === "true"){
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                }else{
+                    $adsystem = null;
+                }
+
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
                 );
-            }else{
-                $adsystem = null;
-            }
-
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-    
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }
         
-        $pdo = null;
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }else{
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }
+            
+            $pdo = null;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/userliketimeline.php b/nextpage/userliketimeline.php
index 041375b..9413650 100644
--- a/nextpage/userliketimeline.php
+++ b/nextpage/userliketimeline.php
@@ -48,119 +48,122 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
-        }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
-
-        $messages = array();
-        
-        $userQuery = $pdo->prepare("SELECT username, userid, profile, role, follower FROM account WHERE userid = :userid");
-        $userQuery->bindValue(':userid', $uwuzuid);
-        $userQuery->execute();
-        $userData = $userQuery->fetch();    
-        $message_array = [];
-
-        $sql = "SELECT ueuse.*  
-                FROM ueuse  
-                LEFT JOIN account ON ueuse.account = account.userid  
-                WHERE FIND_IN_SET(:userid, REPLACE(ueuse.favorite, ' ', '')) > 0 
-                AND account.role != 'ice'  
-                ORDER BY ueuse.datetime DESC  
-                LIMIT :offset, :itemsPerPage"; 
-
-        $stmt = $pdo->prepare($sql); 
-        $stmt->bindValue(':userid', $uwuzuid, PDO::PARAM_STR); 
-        $stmt->bindValue(':offset', $offset, PDO::PARAM_INT); 
-        $stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT); 
-        $stmt->execute(); 
-        $results = $stmt->fetchAll();
-
-        // 結果を追加
-        $message_array = array_merge($message_array, $results);
-        foreach ($message_array as $row) {
-            $messages[] = $row;
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
 
-        // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-        $messages = getDatasUeuse($pdo, $messages);
-        //adsystem------------------
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-        $message['ads'] = "false";
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
+            }
+            $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        $today = date("Y-m-d H:i:s");
+            $messages = array();
+            
+            $userQuery = $pdo->prepare("SELECT username, userid, profile, role, follower FROM account WHERE userid = :userid");
+            $userQuery->bindValue(':userid', $uwuzuid);
+            $userQuery->execute();
+            $userData = $userQuery->fetch();    
+            $message_array = [];
 
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if(!(empty($adsresult))){
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
+            $sql = "SELECT ueuse.*  
+                    FROM ueuse  
+                    LEFT JOIN account ON ueuse.account = account.userid  
+                    WHERE FIND_IN_SET(:userid, REPLACE(ueuse.favorite, ' ', '')) > 0 
+                    AND account.role != 'ice'  
+                    ORDER BY ueuse.datetime DESC  
+                    LIMIT :offset, :itemsPerPage"; 
 
-        $ueuseItems = array();
-        if(!empty($messages)){
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+            $stmt = $pdo->prepare($sql); 
+            $stmt->bindValue(':userid', $uwuzuid, PDO::PARAM_STR); 
+            $stmt->bindValue(':offset', $offset, PDO::PARAM_INT); 
+            $stmt->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT); 
+            $stmt->execute(); 
+            $results = $stmt->fetchAll();
+
+            // 結果を追加
+            $message_array = array_merge($message_array, $results);
+            foreach ($message_array as $row) {
+                $messages[] = $row;
+            }
+
+            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+            $messages = getDatasUeuse($pdo, $messages);
+            //adsystem------------------
+
+            $message['ads'] = "false";
+
+            $today = date("Y-m-d H:i:s");
+
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if(!(empty($adsresult))){
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
+
+            $ueuseItems = array();
+            if(!empty($messages)){
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
+                    }
                 }
-            }
 
-            if($message['ads'] === "true"){
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
+                if($message['ads'] === "true"){
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                }else{
+                    $adsystem = null;
+                }
+
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
                 );
-            }else{
-                $adsystem = null;
-            }
-
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-    
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }
         
-        $pdo = null;
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }else{
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }
+            
+            $pdo = null;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/usermediatimeline.php b/nextpage/usermediatimeline.php
index c58714d..0e610e9 100644
--- a/nextpage/usermediatimeline.php
+++ b/nextpage/usermediatimeline.php
@@ -48,116 +48,119 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
-            $pageNumber = 1;
-        }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
-
-        $messages = array();
-        
-        $userQuery = $pdo->prepare("SELECT username, userid, profile, role, follower FROM account WHERE userid = :userid");
-        $userQuery->bindValue(':userid', $uwuzuid);
-        $userQuery->execute();
-        $userData = $userQuery->fetch();    
-        
-        $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE account = :userid AND rpuniqid = '' AND (
-            (photo1 IS NOT NULL AND photo1 != '' AND photo1 != 'none') OR
-            (photo2 IS NOT NULL AND photo2 != '' AND photo2 != 'none') OR
-            (photo3 IS NOT NULL AND photo3 != '' AND photo3 != 'none') OR
-            (photo4 IS NOT NULL AND photo4 != '' AND photo4 != 'none') OR
-            (video1 IS NOT NULL AND video1 != '' AND video1 != 'none')
-        ) ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");      
-        
-        $messageQuery->bindValue(':userid', $uwuzuid);
-        $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-        $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-        $messageQuery->execute();
-        $message_array = $messageQuery->fetchAll();
-        
-        $messages = array();
-        foreach ($message_array as $row) {
-            $messages[] = $row;
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
 
-        // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-        $messages = getDatasUeuse($pdo, $messages);
-        //adsystem------------------
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-        $message['ads'] = "false";
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if($pageNumber <= 0 || (!(is_numeric($pageNumber)))){
+                $pageNumber = 1;
+            }
+            $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        $today = date("Y-m-d H:i:s");
+            $messages = array();
+            
+            $userQuery = $pdo->prepare("SELECT username, userid, profile, role, follower FROM account WHERE userid = :userid");
+            $userQuery->bindValue(':userid', $uwuzuid);
+            $userQuery->execute();
+            $userData = $userQuery->fetch();    
+            
+            $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE account = :userid AND rpuniqid = '' AND (
+                (photo1 IS NOT NULL AND photo1 != '' AND photo1 != 'none') OR
+                (photo2 IS NOT NULL AND photo2 != '' AND photo2 != 'none') OR
+                (photo3 IS NOT NULL AND photo3 != '' AND photo3 != 'none') OR
+                (photo4 IS NOT NULL AND photo4 != '' AND photo4 != 'none') OR
+                (video1 IS NOT NULL AND video1 != '' AND video1 != 'none')
+            ) ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");      
+            
+            $messageQuery->bindValue(':userid', $uwuzuid);
+            $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+            $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+            $messageQuery->execute();
+            $message_array = $messageQuery->fetchAll();
+            
+            $messages = array();
+            foreach ($message_array as $row) {
+                $messages[] = $row;
+            }
 
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if(!(empty($adsresult))){
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
+            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+            $messages = getDatasUeuse($pdo, $messages);
+            //adsystem------------------
 
-        $ueuseItems = array();
-        if(!empty($messages)){
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+            $message['ads'] = "false";
+
+            $today = date("Y-m-d H:i:s");
+
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if(!(empty($adsresult))){
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
+
+            $ueuseItems = array();
+            if(!empty($messages)){
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
+                    }
                 }
-            }
 
-            if($message['ads'] === "true"){
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
+                if($message['ads'] === "true"){
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                }else{
+                    $adsystem = null;
+                }
+
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
                 );
-            }else{
-                $adsystem = null;
-            }
-
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-    
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }else{
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        }
         
-        $pdo = null;
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }else{
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            }
+            
+            $pdo = null;
+        }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     $item = array(
diff --git a/nextpage/usertimeline.php b/nextpage/usertimeline.php
index 6def194..929d118 100644
--- a/nextpage/usertimeline.php
+++ b/nextpage/usertimeline.php
@@ -41,208 +41,212 @@ if (safetext(isset($_POST['page'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => 'bad_request']);
         exit;
-    }
-
-    // データベースに接続
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
-
-    if (!empty($pdo)) {
-        $myUserData = getUserData($pdo, $userId);
-        $myblocklist = safetext($myUserData["blocklist"]);
-        $mybookmark = safetext($myUserData["bookmark"]);
-
-        $itemsPerPage = 15; // 1ページあたりのユーズ数
-        $pageNumber = $page;
-        if ($pageNumber <= 0 || (!(is_numeric($pageNumber)))) {
-            $pageNumber = 1;
+    }elseif(is_sameUserid($userId, $is_login["userid"]) === true){
+        // データベースに接続
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
         }
-        $offset = ($pageNumber - 1) * $itemsPerPage;
 
-        $messages = array();
+        if (!empty($pdo)) {
+            $myUserData = getUserData($pdo, $userId);
+            $myblocklist = safetext($myUserData["blocklist"]);
+            $mybookmark = safetext($myUserData["bookmark"]);
 
-        if ($is_local === true) {
-            $userQuery = $pdo->prepare("SELECT username, userid, profile, role, follower FROM account WHERE userid = :userid");
-            $userQuery->bindValue(':userid', $uwuzuid);
-            $userQuery->execute();
-            $userData = $userQuery->fetch();
-
-            $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE account = :userid AND rpuniqid = ''ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
-            $messageQuery->bindValue(':userid', $uwuzuid);
-            $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
-            $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
-            $messageQuery->execute();
-            $message_array = $messageQuery->fetchAll();
-
-            foreach ($message_array as $row) {
-                $messages[] = $row;
+            $itemsPerPage = 15; // 1ページあたりのユーズ数
+            $pageNumber = $page;
+            if ($pageNumber <= 0 || (!(is_numeric($pageNumber)))) {
+                $pageNumber = 1;
             }
+            $offset = ($pageNumber - 1) * $itemsPerPage;
 
-            // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
-            $messages = getDatasUeuse($pdo, $messages);
-        } elseif($userData != null) {
-            $activity_base = GetActivityPubJson($userData['outbox']);
-            $pageUrl = $activity_base['first'] ?? null;
+            $messages = array();
 
-            $pageNumber = max(1, (int)$page); // 1ページ目以上に固定
-            $currentPageData = null;
+            if ($is_local === true) {
+                $userQuery = $pdo->prepare("SELECT username, userid, profile, role, follower FROM account WHERE userid = :userid");
+                $userQuery->bindValue(':userid', $uwuzuid);
+                $userQuery->execute();
+                $userData = $userQuery->fetch();
 
-            for ($i = 1; $i <= $pageNumber; $i++) {
-                if (!$pageUrl) break;
+                $messageQuery = $pdo->prepare("SELECT * FROM ueuse WHERE account = :userid AND rpuniqid = ''ORDER BY datetime DESC LIMIT :offset, :itemsPerPage");
+                $messageQuery->bindValue(':userid', $uwuzuid);
+                $messageQuery->bindValue(':offset', $offset, PDO::PARAM_INT);
+                $messageQuery->bindValue(':itemsPerPage', $itemsPerPage, PDO::PARAM_INT);
+                $messageQuery->execute();
+                $message_array = $messageQuery->fetchAll();
 
-                $currentPageData = GetActivityPubJson($pageUrl);
-
-                // 目的のページに達していなければ next をたどる
-                if ($i < $pageNumber) {
-                    $pageUrl = $currentPageData['next'] ?? null;
-                }
-            }
-            $orderedItems = $currentPageData['orderedItems'] ?? [];
-
-            $createItems = array_filter($orderedItems, function ($item) {
-                return isset($item['type']) && $item['type'] === 'Create';
-            });
-            $createItems = array_values($createItems);
-
-            foreach ($createItems as $item) {
-                // object がURLなら取得
-                $object = $item['object'] ?? null;
-                if (is_string($object)) {
-                    $object = GetActivityPubJson($object);
+                foreach ($message_array as $row) {
+                    $messages[] = $row;
                 }
 
-                // nullや不正なobjectはスキップ
-                if (!is_array($object)) continue;
+                // ユーザー情報を取得して、$messages内のusernameをuserDataのusernameに置き換える
+                $messages = getDatasUeuse($pdo, $messages);
+            } elseif($userData != null) {
+                $activity_base = GetActivityPubJson($userData['outbox']);
+                $pageUrl = $activity_base['first'] ?? null;
 
-                $contentHtml = $object['content'] ?? '';
-                $withNewlines = preg_replace('/<br\s*\/?>/i', "\n", $contentHtml);
-                $plainContent = strip_tags($withNewlines);
+                $pageNumber = max(1, (int)$page); // 1ページ目以上に固定
+                $currentPageData = null;
 
-                $photos = [];
-                $video = null;
+                for ($i = 1; $i <= $pageNumber; $i++) {
+                    if (!$pageUrl) break;
 
-                if (!empty($object['attachment'])) {
-                    $attachments = is_array($object['attachment']) ? $object['attachment'] : [$object['attachment']];
+                    $currentPageData = GetActivityPubJson($pageUrl);
 
-                    foreach ($attachments as $att) {
-                        if (!is_array($att)) continue;
+                    // 目的のページに達していなければ next をたどる
+                    if ($i < $pageNumber) {
+                        $pageUrl = $currentPageData['next'] ?? null;
+                    }
+                }
+                $orderedItems = $currentPageData['orderedItems'] ?? [];
 
-                        $mediaType = $att['mediaType'] ?? '';
-                        $url = $att['url'] ?? ($att['href'] ?? null);
+                $createItems = array_filter($orderedItems, function ($item) {
+                    return isset($item['type']) && $item['type'] === 'Create';
+                });
+                $createItems = array_values($createItems);
 
-                        if (!$url) continue;
+                foreach ($createItems as $item) {
+                    // object がURLなら取得
+                    $object = $item['object'] ?? null;
+                    if (is_string($object)) {
+                        $object = GetActivityPubJson($object);
+                    }
 
-                        // 画像（mediaTypeで判定）
-                        if (str_starts_with($mediaType, 'image/')) {
-                            if (count($photos) < 4) {
-                                $photos[] = $url;
+                    // nullや不正なobjectはスキップ
+                    if (!is_array($object)) continue;
+
+                    $contentHtml = $object['content'] ?? '';
+                    $withNewlines = preg_replace('/<br\s*\/?>/i', "\n", $contentHtml);
+                    $plainContent = strip_tags($withNewlines);
+
+                    $photos = [];
+                    $video = null;
+
+                    if (!empty($object['attachment'])) {
+                        $attachments = is_array($object['attachment']) ? $object['attachment'] : [$object['attachment']];
+
+                        foreach ($attachments as $att) {
+                            if (!is_array($att)) continue;
+
+                            $mediaType = $att['mediaType'] ?? '';
+                            $url = $att['url'] ?? ($att['href'] ?? null);
+
+                            if (!$url) continue;
+
+                            // 画像（mediaTypeで判定）
+                            if (str_starts_with($mediaType, 'image/')) {
+                                if (count($photos) < 4) {
+                                    $photos[] = $url;
+                                }
+                            }
+
+                            // 動画（mediaTypeで判定）
+                            if (str_starts_with($mediaType, 'video/') && !$video) {
+                                $video = $url;
                             }
                         }
+                    }
 
-                        // 動画（mediaTypeで判定）
-                        if (str_starts_with($mediaType, 'video/') && !$video) {
-                            $video = $url;
-                        }
+                    $messages[] = [
+                        "rpuniqid" => "",
+                        "ruuniqid" => "",
+                        "uniqid" => "",
+                        "datetime" => date("Y-m-d H:i:s", strtotime($object["published"] ?? "now")),
+                        "account" => $userData["userid"] . "@" . $activity_domain,
+                        "username" => $userData["username"],
+                        "iconname" => $userData["iconname"],
+                        "headname" => $userData["headname"] ?? null,
+                        "role" => $userData["role"] ?? "user",
+                        "sacinfo" => "",
+                        "ueuse" => $plainContent,
+                        "photo1" => $photos[0] ?? null,
+                        "photo2" => $photos[1] ?? null,
+                        "photo3" => $photos[2] ?? null,
+                        "photo4" => $photos[3] ?? null,
+                        "video1" => $video,
+                        "nsfw" => $object["sensitive"] ?? false,
+                        "favorite" => "",
+                        "favorite_count" => 0,
+                        "reply_count" => 0,
+                        "reuse_count" => 0,
+                        "abi" => "",
+                        "abidate" => null,
+                        "activitypub" => true,
+                    ];
+                }
+            }else{
+                $message = array();
+            }
+
+
+            //adsystem------------------
+
+            $message['ads'] = "false";
+
+            $today = date("Y-m-d H:i:s");
+
+            $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
+            $adsQuery->bindValue(':today', $today);
+            $adsQuery->execute();
+            $adsresult = $adsQuery->fetch();
+            if (!(empty($adsresult))) {
+                $message['ads'] = "true";
+                $message['ads_url'] = $adsresult["url"];
+                $message['ads_img_url'] = $adsresult["image_url"];
+                $message['ads_memo'] = $adsresult["memo"];
+            }
+            //--------------------------
+
+            $ueuseItems = array();
+            if (!empty($messages)) {
+                foreach ($messages as $value) {
+                    $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
+                    if ($formatted !== null) {
+                        $ueuseItems[] = $formatted;
                     }
                 }
 
-                $messages[] = [
-                    "rpuniqid" => "",
-                    "ruuniqid" => "",
-                    "uniqid" => "",
-                    "datetime" => date("Y-m-d H:i:s", strtotime($object["published"] ?? "now")),
-                    "account" => $userData["userid"] . "@" . $activity_domain,
-                    "username" => $userData["username"],
-                    "iconname" => $userData["iconname"],
-                    "headname" => $userData["headname"] ?? null,
-                    "role" => $userData["role"] ?? "user",
-                    "sacinfo" => "",
-                    "ueuse" => $plainContent,
-                    "photo1" => $photos[0] ?? null,
-                    "photo2" => $photos[1] ?? null,
-                    "photo3" => $photos[2] ?? null,
-                    "photo4" => $photos[3] ?? null,
-                    "video1" => $video,
-                    "nsfw" => $object["sensitive"] ?? false,
-                    "favorite" => "",
-                    "favorite_count" => 0,
-                    "reply_count" => 0,
-                    "reuse_count" => 0,
-                    "abi" => "",
-                    "abidate" => null,
-                    "activitypub" => true,
-                ];
-            }
-        }else{
-            $message = array();
-        }
-
-
-        //adsystem------------------
-
-        $message['ads'] = "false";
-
-        $today = date("Y-m-d H:i:s");
-
-        $adsQuery = $pdo->prepare("SELECT * FROM ads WHERE start_date < :today AND limit_date > :today ORDER BY rand()");
-        $adsQuery->bindValue(':today', $today);
-        $adsQuery->execute();
-        $adsresult = $adsQuery->fetch();
-        if (!(empty($adsresult))) {
-            $message['ads'] = "true";
-            $message['ads_url'] = $adsresult["url"];
-            $message['ads_img_url'] = $adsresult["image_url"];
-            $message['ads_memo'] = $adsresult["memo"];
-        }
-        //--------------------------
-
-        $ueuseItems = array();
-        if (!empty($messages)) {
-            foreach ($messages as $value) {
-                $formatted = FormatUeuseItem($value, $myblocklist, $mybookmark, $pdo, $userId);
-                if ($formatted !== null) {
-                    $ueuseItems[] = $formatted;
+                if ($message['ads'] === "true") {
+                    $adsystem = array(
+                        "type" => "Ads",
+                        "url" => $message['ads_url'],
+                        "imgurl" => $message['ads_img_url'],
+                        "memo" => $message['ads_memo'],
+                    );
+                } else {
+                    $adsystem = null;
                 }
-            }
 
-            if ($message['ads'] === "true") {
-                $adsystem = array(
-                    "type" => "Ads",
-                    "url" => $message['ads_url'],
-                    "imgurl" => $message['ads_img_url'],
-                    "memo" => $message['ads_memo'],
+                $item = array(
+                    "success" => true,
+                    "ueuses" => $ueuseItems,
+                    "ads" => $adsystem,
                 );
+
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
             } else {
-                $adsystem = null;
+                $item = array(
+                    "success" => false,
+                    "ueuses" => null,
+                    "ads" => null,
+                    "error" => "no_ueuse",
+                );
+                echo json_encode($item, JSON_UNESCAPED_UNICODE);
             }
 
-            $item = array(
-                "success" => true,
-                "ueuses" => $ueuseItems,
-                "ads" => $adsystem,
-            );
-
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
-        } else {
-            $item = array(
-                "success" => false,
-                "ueuses" => null,
-                "ads" => null,
-                "error" => "no_ueuse",
-            );
-            echo json_encode($item, JSON_UNESCAPED_UNICODE);
+            $pdo = null;
         }
-
-        $pdo = null;
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
+
 } else {
     $item = array(
         "success" => false,
diff --git a/server/uwuzuabout.txt b/server/uwuzuabout.txt
index 5cda558..c1969de 100644
--- a/server/uwuzuabout.txt
+++ b/server/uwuzuabout.txt
@@ -2,7 +2,8 @@
 使っている方ならわかると思いますが普通のSNSです！
 これと言った大きな特徴もなく、平凡で、なんとも言えないSNSです…
 あっ！特徴かもしれないのが誰でもサーバーを建てられることです！！！
-詳細はdocs.uwuzu.xyzを確認してください！
+SNSを作れるソフトウェアみたいな...？
+よければ詳細はdocs.uwuzu.comを確認してください！
 ### 1.1 uwuzuのよみは？
 uwuzuの読みはゆずです。
 
@@ -28,7 +29,7 @@ uwuzuはPHPとJS、HTML(プログラミング言語じゃないか)、CSSで作
 使用している画像は友人またはGoogle Icons様より使わせて頂いております！
 
 ## 5. サーバーの建て方
-docs.uwuzu.xyzをご確認いただくかgithubのreadme.mdをよんでください！
+docs.uwuzu.comをご確認いただくかgithubのreadme.mdをよんでください！
 
 ## 6. Android、iOS、その他OS向けのアプリについて
 残念ですが今現在は公式アプリ等はなく、Webブラウザからお楽しみいただけます。
@@ -98,4 +99,4 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 ## 更新情報
 編集者 : daichimarukana
-最終更新日 : 2025/08/05 0:45
\ No newline at end of file
+最終更新日 : 2026/04/05 16:32
\ No newline at end of file
diff --git a/server/uwuzuinfo.txt b/server/uwuzuinfo.txt
index f24546d..6496d61 100644
--- a/server/uwuzuinfo.txt
+++ b/server/uwuzuinfo.txt
@@ -1,4 +1,4 @@
 uwuzu
-1.6.11
-2026/01/05
+1.6.12
+2026/04/22
 daichimarukana,putonfps
\ No newline at end of file
diff --git a/server/uwuzurelease.txt b/server/uwuzurelease.txt
index e191f1a..e1930fc 100644
--- a/server/uwuzurelease.txt
+++ b/server/uwuzurelease.txt
@@ -1,6 +1,17 @@
 ## リリースノートだぜぇぇぇぇぇぇい！！！！！！！
 ここにはuwuzuの更新情報を載せてくぜぇ～！(いやまてテンションおかしいだろ...)
 
+## Version 1.6.12 (Hapuego)
+2026/01/05
+fix: 設定画面でヘッダーの更新時にアイコンに関するエラーが発生してしまう可能性のある問題を修正しました！
+fix: 設定変更APIでアイコン・ヘッダーの更新失敗時にエラーが正常に返されない恐れのある問題を修正しました！
+fix: APIを通じて画像を投稿できない恐れのある問題を修正しました！
+fix: レンタルサーバーなどの環境で正常にサーバーの残り空き容量などが取得できず、エラーが起きてしまう恐れのある問題を修正しました！
+fix: ユーズに含まれているURLに「_」(アンダーバー)が含まれていた際に「_」が一件のみでも斜体判定となってしまいURLが正しく変換されない問題を修正しました！
+fix: 重大な脆弱性を修正しました。
+new: Markdownを強化し、小さく表示「-# [ここにテキスト]」を実装しました！
+new: Soundcloud埋め込みに対応しました！
+
 ## Version 1.6.11 (Hapuego)
 2026/01/05
 fix: 背景透過画像が投稿できない問題を修正しました！
diff --git a/settings_admin/api/code_delete.php b/settings_admin/api/code_delete.php
index 0842f71..e013b33 100644
--- a/settings_admin/api/code_delete.php
+++ b/settings_admin/api/code_delete.php
@@ -16,45 +16,48 @@ if (safetext(isset($_POST['code'])) && safetext(isset($_POST['userid'])) && safe
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }elseif(is_sameUserid($postUserid, $is_login["userid"]) === true){
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            // 接続エラーのときエラー内容を取得する
+            $error_message[] = $e->getMessage();
+        }
 
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        // 接続エラーのときエラー内容を取得する
-        $error_message[] = $e->getMessage();
-    }
+        $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
 
-    $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
+        $query->execute(array(':userid' => $postUserid));
 
-    $query->execute(array(':userid' => $postUserid));
+        $result2 = $query->fetch();
 
-    $result2 = $query->fetch();
+        if($result2["loginid"] === $loginid){
+            if($result2["admin"] === "yes"){
+                try {
+                    // 削除クエリを実行
+                    $deleteQuery = $pdo->prepare("DELETE FROM invitation WHERE code = :code");
+                    $deleteQuery->bindValue(':code', $postCode, PDO::PARAM_STR);
+                    $res = $deleteQuery->execute();
 
-    if($result2["loginid"] === $loginid){
-        if($result2["admin"] === "yes"){
-            try {
-                // 削除クエリを実行
-                $deleteQuery = $pdo->prepare("DELETE FROM invitation WHERE code = :code");
-                $deleteQuery->bindValue(':code', $postCode, PDO::PARAM_STR);
-                $res = $deleteQuery->execute();
-
-                if ($res) {
-                    echo json_encode(['success' => true]);
-                    exit;
-                } else {
-                    echo json_encode(['success' => false, 'error' => '削除に失敗しました。']);
+                    if ($res) {
+                        echo json_encode(['success' => true]);
+                        exit;
+                    } else {
+                        echo json_encode(['success' => false, 'error' => '削除に失敗しました。']);
+                        exit;
+                    }
+                } catch(PDOException $e) {
+                    echo json_encode(['success' => false, 'error' => 'データベースエラー：' . $e->getMessage()]);
                     exit;
                 }
-            } catch(PDOException $e) {
-                echo json_encode(['success' => false, 'error' => 'データベースエラー：' . $e->getMessage()]);
-                exit;
             }
         }
+    }else{
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     echo json_encode(['success' => false, 'error' => '削除に失敗しました。(sess_err)']);
diff --git a/settings_admin/api/update_query.php b/settings_admin/api/update_query.php
index f0180ae..5eb35de 100644
--- a/settings_admin/api/update_query.php
+++ b/settings_admin/api/update_query.php
@@ -16,77 +16,80 @@ if (isset($_FILES['update_zip']) && isset($_POST['userid']) && isset($_POST['acc
     if ($is_login === false) {
         echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
         exit;
-    }
+    }elseif(is_sameUserid($postUserid, $is_login["userid"]) === true){
+        try {
+            $option = array(
+                PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
+                PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
+            );
+            $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
+        } catch (PDOException $e) {
+            $error_message[] = $e->getMessage();
+        }
 
-    try {
-        $option = array(
-            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
-            PDO::MYSQL_ATTR_MULTI_STATEMENTS => false
-        );
-        $pdo = new PDO('mysql:charset=utf8mb4;dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS, $option);
-    } catch (PDOException $e) {
-        $error_message[] = $e->getMessage();
-    }
+        if(empty($error_message)){
+            $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
+            $query->execute(array(':userid' => $postUserid));
+            $result2 = $query->fetch();
 
-    if(empty($error_message)){
-        $query = $pdo->prepare('SELECT * FROM account WHERE userid = :userid limit 1');
-        $query->execute(array(':userid' => $postUserid));
-        $result2 = $query->fetch();
+            if($result2["loginid"] === $loginid){
+                if($result2["admin"] === "yes"){
 
-        if($result2["loginid"] === $loginid){
-            if($result2["admin"] === "yes"){
+                    $uploadDir = sys_get_temp_dir();
+                    $uploadFile = $uploadDir . '/' . basename($_FILES['update_zip']['name']);
 
-                $uploadDir = sys_get_temp_dir();
-                $uploadFile = $uploadDir . '/' . basename($_FILES['update_zip']['name']);
+                    if (move_uploaded_file($_FILES['update_zip']['tmp_name'], $uploadFile)) {
+                        $extractPath = $uploadDir . '/uwuzu_update_' . createUniqId();
 
-                if (move_uploaded_file($_FILES['update_zip']['tmp_name'], $uploadFile)) {
-                    $extractPath = $uploadDir . '/uwuzu_update_' . createUniqId();
+                        $zip = new ZipArchive;
+                        if ($zip->open($uploadFile) == true) {
+                            $zip->extractTo($extractPath);
+                            $zip->close();
 
-                    $zip = new ZipArchive;
-                    if ($zip->open($uploadFile) == true) {
-                        $zip->extractTo($extractPath);
-                        $zip->close();
-
-                        // JSONファイルを読み込む
-                        $jsonFile = $extractPath . '/update.json';
-                        if (file_exists($jsonFile)) {
-                            $jsonData = json_decode(file_get_contents($jsonFile), true);
-                            if (json_last_error() === JSON_ERROR_NONE) {
-                                $response = [
-                                    'success' => true,
-                                    'software_name' => safetext($jsonData['software']) ?? '名前がありません',
-                                    'version' => safetext($jsonData['version']) ?? 'バージョン情報がありません',
-                                    'release_notes' => safetext($jsonData['release_notes']) ?? 'リリースノートが見つかりません。',
-                                    'notices' => safetext($jsonData['notices']) ?? '注意事項が見つかりません。',
-                                    'file_path' => safetext($extractPath)
-                                ];
-                                echo json_encode($response);
+                            // JSONファイルを読み込む
+                            $jsonFile = $extractPath . '/update.json';
+                            if (file_exists($jsonFile)) {
+                                $jsonData = json_decode(file_get_contents($jsonFile), true);
+                                if (json_last_error() === JSON_ERROR_NONE) {
+                                    $response = [
+                                        'success' => true,
+                                        'software_name' => safetext($jsonData['software']) ?? '名前がありません',
+                                        'version' => safetext($jsonData['version']) ?? 'バージョン情報がありません',
+                                        'release_notes' => safetext($jsonData['release_notes']) ?? 'リリースノートが見つかりません。',
+                                        'notices' => safetext($jsonData['notices']) ?? '注意事項が見つかりません。',
+                                        'file_path' => safetext($extractPath)
+                                    ];
+                                    echo json_encode($response);
+                                } else {
+                                    echo json_encode(['success' => false, 'error' => 'JSONファイルの読み込みに失敗しました。(ROADING_JSON_ERROR)']);
+                                }
                             } else {
                                 echo json_encode(['success' => false, 'error' => 'JSONファイルの読み込みに失敗しました。(ROADING_JSON_ERROR)']);
                             }
                         } else {
-                            echo json_encode(['success' => false, 'error' => 'JSONファイルの読み込みに失敗しました。(ROADING_JSON_ERROR)']);
+                            echo json_encode(['success' => false, 'error' => '読み込みに失敗しました。1(ROADING_ERROR)']);
                         }
-                    } else {
-                        echo json_encode(['success' => false, 'error' => '読み込みに失敗しました。1(ROADING_ERROR)']);
-                    }
 
-                    if (file_exists($uploadFile)) {
-                        if (is_file($uploadFile)) {
-                            unlink($uploadFile);
+                        if (file_exists($uploadFile)) {
+                            if (is_file($uploadFile)) {
+                                unlink($uploadFile);
+                            }
                         }
+                    }else{
+                        echo json_encode(['success' => false, 'error' => 'ファイルの移動に失敗しました。(ROADING_ERROR)']);
                     }
                 }else{
-                    echo json_encode(['success' => false, 'error' => 'ファイルの移動に失敗しました。(ROADING_ERROR)']);
+                    echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
                 }
             }else{
                 echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
             }
         }else{
-            echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+            echo json_encode(['success' => false, 'error' => 'データベースの接続に失敗しました。(ERROR)']);
         }
     }else{
-        echo json_encode(['success' => false, 'error' => 'データベースの接続に失敗しました。(ERROR)']);
+        echo json_encode(['success' => false, 'error' => '認証に失敗しました。(AUTH_INVALID)']);
+        exit;
     }
 }else{
     echo json_encode(['success' => false, 'error' => '読み込みに失敗しました。2(ROADING_ERROR)']);
diff --git a/settings_admin/overview_admin.php b/settings_admin/overview_admin.php
index 1ca607b..e8b7cb2 100644
--- a/settings_admin/overview_admin.php
+++ b/settings_admin/overview_admin.php
@@ -171,37 +171,59 @@ if(!empty($pdo)){
 
 if(function_exists("disk_free_space")){
     if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
-        $disk = true;
-        $totalRaw = disk_total_space('C:');
-        $diskTotal = ($totalRaw > 0) ? (int)$totalRaw / 1024 / 1024 : 0;
-        $diskFree = (int)disk_free_space('C:') / 1024 / 1024;
-        $diskUmari = $diskTotal - $diskFree;
+		$totalRaw = @disk_total_space('C:');
+		if($totalRaw !== false){
+			$disk = true;
+			$diskTotal = ($totalRaw > 0) ? (int)$totalRaw / 1024 / 1024 : 0;
+			$diskFree = (int)disk_free_space('C:') / 1024 / 1024;
+			$diskUmari = $diskTotal - $diskFree;
 
-        if ($diskTotal > 0 && ($diskFree / $diskTotal < 0.1)) {
-            $disk_over90p = true;
-        } else {
-            $disk_over90p = false;
-        }
-    
-        $loadAve = null;
+			if ($diskTotal > 0 && ($diskFree / $diskTotal < 0.1)) {
+				$disk_over90p = true;
+			} else {
+				$disk_over90p = false;
+			}
+		
+			$loadAve = null;
+		}else{
+			$disk = false;
+			$diskFree = 5000;
+			$diskUmari = 5000;
+			$diskTotal = 10000;
+			$disk_over90p = false;
+			$loadAve = null;
+		}
     } else {
-        $disk = true;
-        $totalRaw = disk_total_space('/');
-        $diskTotal = ($totalRaw > 0) ? (int)$totalRaw / 1024 / 1024 : 0;
-        $diskFree = (int)disk_free_space('/') / 1024 / 1024;
-        $diskUmari = $diskTotal - $diskFree;
+		$totalRaw = @disk_total_space('/');
+		if($totalRaw !== false){
+			$disk = true;
+			$diskTotal = ($totalRaw > 0) ? (int)$totalRaw / 1024 / 1024 : 0;
+			$diskFree = (int)disk_free_space('/') / 1024 / 1024;
+			$diskUmari = $diskTotal - $diskFree;
 
-        if ($diskTotal > 0 && ($diskFree / $diskTotal < 0.1)) {
-            $disk_over90p = true;
-        } else {
-            $disk_over90p = false;
-        }
+			if ($diskTotal > 0 && ($diskFree / $diskTotal < 0.1)) {
+				$disk_over90p = true;
+			} else {
+				$disk_over90p = false;
+			}
 
-        if(function_exists("sys_getloadavg")){
-            $loadAve = sys_getloadavg()[0];
-        } else {
-            $loadAve = null;
-        }
+			if(function_exists("sys_getloadavg")){
+				$loadAve = sys_getloadavg()[0];
+			} else {
+				$loadAve = null;
+			}
+		}else{
+			$disk = false;
+			$diskFree = 5000;
+			$diskUmari = 5000;
+			$diskTotal = 10000;
+			$disk_over90p = false;
+			if(function_exists("sys_getloadavg")){
+				$loadAve = sys_getloadavg()[0];
+			}else{
+				$loadAve = null;
+			}
+		}
     }
 } else {
     $disk = false;
diff --git a/update.json b/update.json
index cabb1bf..4d62eb2 100644
--- a/update.json
+++ b/update.json
@@ -1,12 +1,43 @@
 {
     "software": "uwuzu",
-    "version": "1.6.11",
-    "release_date": "2026/01/05",
-    "release_notes": "このアップデートには、背景透過画像が投稿できないバグの修正が含まれます！\n詳細はリリースノートをご確認ください。",
+    "version": "1.6.12",
+    "release_date": "2026/04/22",
+    "release_notes": "このアップデートには、とっても重大な脆弱性の修正が含まれます！また、一部新機能の追加、バグ修正が含まれます。\n詳細はリリースノートをご確認ください。",
     "notices": "アップデート前にデータのバックアップを行うことをおすすめします！",
     "files": {
         "overwrite": [
+            "/admin/addadmin.php",
+            "/api/me/settings/index.php",
+            "/api/ueuse/create.php",
+            "/css/home.css",
+            "/js/view_function.js",
+            "/new.php",
+            "/settings_admin/overview_admin.php",
+            "/uwuzu_error_code.txt",
+            "/abi/addabi.php",
+            "/bookmark/bookmark.php",
+            "/delete/delete.php",
+            "/favorite/favorite.php",
+            "/function/delete_apitoken.php",
             "/function/function.php",
+            "/function/get_customemoji.php",
+            "/function/get_userid.php",
+            "/function/reuse.php",
+            "/function/settings.php",
+            "/function/ueuse.php",
+            "/migration/index.php",
+            "/nextpage/bookmarktimeline.php",
+            "/nextpage/followtimeline.php",
+            "/nextpage/foryoutimeline.php",
+            "/nextpage/localtimeline.php",
+            "/nextpage/notification.php",
+            "/nextpage/searchtimeline.php",
+            "/nextpage/ueusetimeline.php",
+            "/nextpage/userliketimeline.php",
+            "/nextpage/usermediatimeline.php",
+            "/nextpage/usertimeline.php",
+            "/settings_admin/api/code_delete.php",
+            "/settings_admin/api/update_query.php",
             "/server/uwuzuabout.txt",
             "/server/uwuzuinfo.txt",
             "/server/uwuzurelease.txt"
diff --git a/uwuzu_error_code.txt b/uwuzu_error_code.txt
index 78a31e8..5f37e2c 100644
--- a/uwuzu_error_code.txt
+++ b/uwuzu_error_code.txt
@@ -32,15 +32,20 @@ could_not_complete - 処理を完了できなかった場合に表示されま
 user_not_frozen_cant_be_banned - APIからユーザーをBANしようとした際に、ユーザーが事前に凍結されていない場合に発生するエラーです。
 method_not_allowed - 禁止されたHTTPメゾットで要求があった場合に表示されます。
 this_API_is_ws_only - WebsocketAPIがWebsocket以外の方法でアクセスされた場合に表示されます。
+base64_decode_failed - Base64デコードに失敗した場合に表示されます。
 
 ----------(UWUZU ERR CODE)----------
 FILE_DEKASUGUI_PHP_INI_KAKUNIN - php.iniで設定されているファイルサイズ上限を上回っている時に表示されます。
 FILE_DEKASUGUI_HTML_KAKUNIN - HTMLフォームで指定されているファイルサイズ上限を上回っている時に表示されます。
 FILE_SUKOSHIDAKE_UPLOAD - アップロードされたファイルが一部のみアップロードされた場合に表示されます。
 FILE_UPLOAD_DEKINAKATTA - ファイルのアップロードができない場合に表示されます。
+FILE_NAME_NAI - ファイル名が無い場合に表示されます。
+FILE_PATH_NAI - ファイルパスが無い場合に表示されます。
+FILE_SIZE_NAI - ファイルサイズが無い場合に表示されます。
 TMP_FOLDER_NAI - テンポラリフォルダがない場合に表示されます。
 FILE_KAKIKOMI_SIPPAI - 記憶装置へのファイル書き込みに失敗した場合に表示されます。
 PHPINFO()_KAKUNIN - PHPの拡張モジュールによりアップロードが中止された場合に表示されます。
+SAVE_FOLDER_KAKIKOMI_KENNAI - フォルダへの書き込み権が無い場合に表示されます。
 
 INVITATION_CODE_INPUT_PLEASE - 招待コードが入力されていない時に表示されます。
 INVITATION_CODE_SHIYOUZUMI - 招待コードが使用済みの場合に表示されます。