A class encapsulated in PHP to display/delete all files and empty directories in the file directory. At the same time, the directory or directory and file with the file name 0 can be deleted.

<?php
class file{
    static public function ShowDir($path,$level=0){
        $dir=opendir($path);
        while(($file=readdir($dir)) !==false){
            if($file!=&#39;.&#39; && $file!=&#39;..&#39;){
                $filepath=$path.&#39;/&#39;.$file;
                for($i=0;$i<$level*5;$i++){
                    echo " ";
                }
                echo $file.&#39;<br>&#39;;
                if(is_dir($filepath)) {
                static::ShowDir($filepath, $level + 1);
                }
            }
        }
        closedir($dir);
    }
    static public function DeleteDir($path){
        $dir=opendir($path);
        while(($file=readdir($dir)) !== false){
            if($file!=&#39;.&#39; && $file!=&#39;..&#39;){
                $filepath=$path.&#39;/&#39;.$file;
                if(is_dir($filepath)){
                    self::DeleteDir($filepath);
                }else{
                    unlink($filepath);
                }
            }
        }
        closedir($dir);
        rmdir($path);
    }
}
?>