问 使用SQL语句的Foreach循环

EN

我正在创建一个系统，允许您添加包含多个上传图像的消息。但是，当我试图将所有图像位置插入到表“messages”中具有外键的表中时(这样每个图像都知道它属于哪一条消息)，就会得到以下错误：

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`scrapll`.`scrapimage`, CONSTRAINT `scrapimage_ibfk_1` FOREIGN KEY (`scrap_id`) REFERENCES `scraps` (`scrap_id`))' in C:\xampp\htdocs\scrapll_m_nonstatic\process\new\scrap_process.php:132 Stack trace: #0 C:\xampp\htdocs\scrapll_m_nonstatic\process\new\scrap_process.php(132): PDOStatement->execute(Array) #1 {main} thrown in C:\xampp\htdocs\scrapll_m_nonstatic\process\new\scrap_process.php on line 132

只有当我试图上传多张图片时，才会发生这种情况。当我只上传一张图片时，一点问题都没有。

下面是代码：

foreach($_FILES['scrapPhotos']['tmp_name'] as $key => $tmp_name ){
                $fileName = $_FILES['scrapPhotos']['name'][$key];
                $fileSize = $_FILES['scrapPhotos']['size'][$key];
                $fileTmp = $_FILES['scrapPhotos']['tmp_name'][$key];
                $fileType= $_FILES['scrapPhotos']['type'][$key];
                if($_FILES['scrapPhotos']['name'][$key]){
                    // Get file extension of uploaded file
                    $imgFileExtension = strrchr($fileName, ".");
                    // Check if file extension of uploaded file is valid
                    if(!in_array($imgFileExtension, $validFileExtensions)) {
                        echo $scrapErrors[0];
                    // Check if file size is valid (!> 10000000)
                    elseif($fileSize > MAXFILESIZE) {
                        echo $scrapErrors[1];
                    else {                  
                        // The path to Scrap image
                        $imgLoc = "../../../scrapll_m/static/img/user/scrap/orig/";
                        // Move files to appropiate location
                        $imgFile = sha1(uniqid($_FILES['scrapPhotos']['name'][$key]));
                        $imgFilePath = $imgLoc . $imgFile . $imgFileExtension;
                        // Store image(s) on the server
                        move_uploaded_file($_FILES['scrapPhotos']['tmp_name'][$key], $imgFilePath);
                        $insertImgQuery = 'INSERT INTO scrapimage (scrap_id, image_original_size, image_scrap_size)