PHP Count file lines in a folder

Count file lines in a folder

<?php
if ($handle = opendir('.'))
{
     while (false !== ($filename = readdir($handle)))
     {
          $name = explode(".", $filename);
          if ($filename != "." && $filename != ".." && ($name[1] == "php" || $name[1] == "css"))
          {
               $file = file($filename);
               $counts += count($file);
          }
     }
     closedir($handle);
}
echo $counts;
?>