Get Rekt scandir()

<?php

    if(!defined('_SCAN_TYPE_ALL_')){
        DEFINE('_SCAN_TYPE_ALL_', 1);
    }
    if(!defined('_SCAN_TYPE_FILES_')){
        DEFINE('_SCAN_TYPE_FILES_', 2);
    }
    if(!defined('_SCAN_TYPE_DIRS_')){
        DEFINE('_SCAN_TYPE_DIRS_', 3);
    }
    function scan_dir($directory, $scan_type = _SCAN_TYPE_ALL_ ){
        $scan = scandir($directory);
        switch($scan_type){
            case _SCAN_TYPE_ALL_ :
                return $scan;
                break;
            case _SCAN_TYPE_DIRS_ :
                $directories = Array();
                foreach($scan as $dirname){
                    if(is_dir($dirname)){
                        $directories[] = $dirname;
                    }
                }
                unset($scan);
                return $directories;
                break;
            case _SCAN_TYPE_FILES_ :
                $files = Array();
                foreach($scan as $filename){
                    if(is_file($filename)){
                        $files[] = $filename;
                    }
                }
                unset($scan);
                return $files;
        }
    }
?>