取消链接 - 权限被拒绝。如何解决？

Question

我想使用 unlink 删除文件，但我收到一条警告消息，

Warning: unlink(uploads/487001/): Permission denied in

当我查看文件夹时，文件已成功删除。下面是我做的代码，

Uploads.php

<?php
if (isset($_FILES['mc'])) {
    $file = $sno . "-" . date("Ymd") . "-" . $_FILES['mc']['name'];
    $file_loc = $_FILES['mc']['tmp_name'];
    $file_size = $_FILES['mc']['size'];
    $folder = "uploads/" . $sno . "/";
    $final_file = str_replace(' ', '-', strtolower($file));

    if ($file_size <= 0) {
        $error= "<span class=\"w3-text-red\">Select a file to upload</span>";
    }

    if (!is_dir($folder)) {
        mkdir($folder, 0777, true);
    }

    if (move_uploaded_file($file_location, $folder . $final_file)) {
        $upload = true; 
    }
}

Delete.php

<?php 
if(isset($_POST['delete'])){

    if(empty($_POST['checkbox'])){
        $error = "<span class=\"w3-container w3-text-red\">No data selected</span><p/>";
    } elseif(isset($_POST['checkbox'])){
        $checkbox = $_POST['checkbox'];
        $files = $_POST['file'];
        $path = 'uploads/' . $_SESSION['staff_no'] . '/';

        foreach ($files as $file) {
            if (file_exists($path.$file)) {
                chmod($path.$file, 0777);
                unlink($path.$file);
            } 
        }
    }

// Other validations & Delete row from database

这是文件结构，

Project Folder > Uploads > user_id > files

请问错误是什么？

Answer 1

$POST['file']拿着什么？如果它是一个数组，那么还要检查空白/空值。 file_exists() 将 return 在 $file 为空的情况下为真，但随后您的路径将以uploads/487001/ 你会收到那个警告。

Answer 2

使用这种方式，它会从服务器和数据库中删除文件。

if(isset($_POST['delete'])){

    if($file_path) {
         chmod($file_path, 0777);
         unlink($file_path);
       $query = "DELETE FROM medias WHERE mediaId = '".$_POST["delete"]."'";
       $statement= $db->delete($query);   
     }
}

取消链接 - 权限被拒绝。如何解决？

Unlink - Permission denied. How to resolve?

php

file-upload

unlink