php实现批量修改文件名称的方法

<?phpsession_start();set_time_limit(0);//function allfile($dir)// {//  $files=array();//  if(is_file($dir))//   {//     return $dir;//  }//   $handle = opendir($dir);//   if($handle) {//     while(false !== ($file = readdir($handle))) {//      if ($file != '.' && $file != '..') {//         $filename = $dir . "/" . $file;//         if(is_file($filename)) {//           $files[] = $filename;//        }else {////          $files = array_merge($files, allfile($filename));//         }//       }//     }  // end while//     closedir($handle);//   }//  return $files;//// }// $dir="./*";//print_r(allfile($dir));$path = '.';function get_filetree($path){ $tree = array(); foreach(glob($path.'/*') as $single){  if(is_dir($single)){   $tree = array_merge($tree,get_filetree($single));  }  else{   $tree[] = $single;  } } return $tree;}$dir_arr=get_filetree($path);$dir_arr_count=count($dir_arr);//echo $dir_arr_count."<br />";for($i=0;$i<$dir_arr_count;$i++){  $file_name= $dir_arr[$i];  echo $file_name."<br />";    $file=basename($file_name);    //echo $file."<br />";    $dir_arr_0_=explode($file,$file_name);    $dir_arr_0_0=$dir_arr_0_[0];    $file_arr=explode("[1]",$file);    ////rename    $file_new_name=$file_arr[0].$file_arr[1];    rename($file_name,$dir_arr_0_0.$file_new_name);  }?>