PHP实现查找指定目录下指定的文件

<?php
class document{
private $file_array=array();
private $folder_array=array();
private $all_array=array();
function search($path,$file){
       if(is_dir($path)){
       $H=opendir($path);
        while(false!==($_file=readdir($H))){
         if(is_dir($path."/".$_file)&&$_file!="." && $_file!=".." && $_file!=="Thumbs.db"){
          if(eregi($file,$path."/".$_file)){
          array_push($this->folder_array,$path."/".$_file