上传同名文件

Question

我想从我的 android 应用程序上传文件。第一次成功，但第二次如果我想替换文件，它不会做任何事情。

 <?php
    $file_path = "usuario/";

    $file_path = $file_path . basename( $_FILES['uploaded_imagen']['name']);

    if(file_exists($file_path))
    {
      unlink($file_path);
    }

    if(move_uploaded_file($_FILES['uploaded_imagen']['tmp_name'], $file_path)) {
          echo "success1";
    } else{
          echo "fail1";
    }
 ?>

Answer 1

您可以尝试在删除现有文件之前更改文件权限（如果您的 www 用户被允许这样做）

<?php
$basename = basename($_FILES['uploaded_imagen']['name']);
//todo: (play safe)  $basename = hash('sha256', $basename) . '.EXT';
$target_file = 'usuario/' . $basename;
if(file_exists($target_file))
{
    chmod($target_file,0755); //change perms if possible
    unlink($target_file); //remove the file
}
if(move_uploaded_file($_FILES['uploaded_imagen']['tmp_name'], $target_file))
{
    echo "<P>FILE UPLOADED TO: $target_file</P>";
}
else
{
    echo "<P>MOVE UPLOADED FILE FAILED!</P>";
    print_r(error_get_last());
}

或者 - 只需更改目标目录的权限（首先找出您的服务器的 www 用户是什么运行之后）：

ps aux | egrep '(apache|httpd)'

chown www-user:www-group '/path/to/files'
chmod 0700 '/path/to/files'

上传同名文件

upload a file with the same name

php

file-permissions

file-upload

file