<?

function du($location) {
   if (!$location or !is_dir($location)) {
      return 0;
   }

   $total = 0;

   $all = opendir($location);
   while ($file = readdir($all)) {
      if (is_dir($location.'/'.$file) and $file <> ".." and $file <> ".") {
         $total += du($location.'/'.$file);
         unset($file);
      }
      elseif (!is_dir($location.'/'.$file)) {
         $stats = stat($location.'/'.$file);
         $total += $stats['size'];
         unset($file);
      }
   }
   closedir($all);
   unset($all);
   return $total;
}

print du('l');


?>