我正在尝试从服务器的压缩文件夹中下载多个文件。以下是迄今为止我掌握的代码：

HTML

<form method="post">
    <input type="checkbox" name="checked[]" value="<?php echo $path; ?>">
    <input type="submit" name="download" value="Download Selected">
</form>

PHP:

if(isset($_POST[\'download\'])){
     $files = $_POST[\'checked\'];
     foreach ($files as $file ) {

    if(file_exists($_SERVER[\'DOCUMENT_ROOT\'].\'/upload/folder/\'. $file)){
        require_once(ABSPATH . "wp-admin" . \'/includes/file.php\');
        $full_path = $_SERVER[\'DOCUMENT_ROOT\'].\'/bcg/wp-content/uploads/\'. $file;
        download_url($full_path);
    }
    else {
        echo \'file doesnt exist\';
    }   
  } 
}