我正在嘗試通過上傳表單將圖像發送到 php 腳本，但該文件沒有顯示在我的臨時文件夾中。我嘗試搜索錯誤并找到了此答案。多次檢查每個步驟后，我仍然發現自己沒有上傳文件...表格 ：<form id="addImageForm" action="functions/add_image.php" method="POST" enctype="multipart/form-data">  <label for="articleImage">Select a file:</label>  <input type="file" name="articleImage" id="articleImage">  <input type="submit" class="btn btn-success" value="Submit"></form>add_image.php 腳本：<?php/* Checking request parameters */if(!isset($_FILES['articleImage']) || empty($_FILES['articleImage'])) {    echo "Error : the file is missing";    die();}/* Checking upload errors */if($_FILES['articleImage']['error'] != UPLOAD_ERR_OK) {    echo "Error : ".$_FILES['articleImage']['error'];    die();}/* Checking file size */if($_FILES['articleImage']['size'] == 0) {    echo "Error : the file is empty";    die();}/* Checking file has been uploaded to tmp */if(is_uploaded_file($_FILES['articleImage']['tmp_name'])) {    echo "Error : the file didn't upload";    die();}/* Checking file doesn't already exist */$imagePath = "img/articles/".$_FILES['articleImage']['name'];if(file_exists($imagePath)) {    echo "Error : the filename is already taken";    die();}/* Writing image */if(!move_uploaded_file($_FILES['articleImage']['tmp_name'], $imagePath)) {    echo "Error : the file coundn't be written";    die();}echo 'Success';die();?>請求已正確發送：-----------------------------45933353531894573431775954628Content-Disposition: form-data; name="articleImage"; filename="my_file.png"Content-Type: image/png[image content]-----------------------------45933353531894573431775954628--但我仍然收到“文件未上傳”的消息錯誤...正如我之前提到的，我確實檢查了我的 php conf（使用 /tmp 作為 upload_tmp_dir 編輯了正確的 php.ini 文件并將上傳限制設置為 100M），并且 /tmp 上有 777 chmod。我缺少什么？