php 读取目录文件

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2016/4/6
 * Time: 17:01
 */
$dir = dirname(__FILE__);
$handle = opendir($dir.'.');
$array_file = array();
while(false!==($file = readdir($handle))){
   if($file!="."&& $file !=".."){
        $array_file[]=$file;
    }
}
closedir($handle);
print_r($array_file);die;