Вывести список всех файлов на сервере (и размер файла)

echo "<table><tbody>";
$total_filesize = 0;
if(!empty($_GET['my_scandir'])){
  function my_scandir($dir){
  	global $total_filesize;
    $files = scandir($dir);
    foreach($files as $file){
      if($file != "." AND $file != ".."){
 
        if(is_dir($dir."/".$file)){
          my_scandir($dir."/".$file);
        }else{
          $filesize = filesize($dir."/".$file) / 1024 ;   
          $total_filesize += $filesize;
          $style = "";
          if($filesize > 1024*10){
            $style .= "background:#3498db;color:#fff";
          }
          if(true/*$filesize > 1024*/){
          echo "<tr>";
          echo "<td>";
          echo $dir."/".$file;
          echo "</td>";
          echo "<td style='".$style."'>";
          echo round($filesize, 2)." KB;";
          echo "</td>";
          echo "</tr>";
          }
  		}
      }
    }
  }
  my_scandir($_SERVER['DOCUMENT_ROOT']);
  echo $total_filesize." KB;";
}
echo "</tbody></table>";