Calculate Directory Size

<?
//this code can now count directories too
//and armed with a new function to format the size in bytes,KB,Mb or GB accordingly
//Enjoy
//Updated by Pradeep pradeep[AT]go4expert[DOT]com
//http://myslambook.co.nr

function getDirectorySize($path)
{
  $totalsize = 0;
  $totalcount = 0;
  $dircount = 0;
  if ($handle = opendir ($path))
  {
    while (false !== ($file = readdir($handle)))
    {
      $nextpath = $path . '/' . $file;
      if ($file != '.' && $file != '..' && !is_link ($nextpath))
      {
        if (is_dir ($nextpath))
        {
          $dircount++;
		  $result = getDirectorySize($nextpath);
          $totalsize += $result['size'];
          $totalcount += $result['count'];
		  $dircount += $result['dircount'];
        }
        elseif (is_file ($nextpath))
        {
          $totalsize += filesize ($nextpath);
          $totalcount++;
        }
      }
    }
  }
  closedir ($handle);
  $total['size'] = $totalsize;
  $total['count'] = $totalcount;
  $total['dircount'] = $dircount;
  return $total;
}

function sizeFormat($size)
{
	$sizeStr='';
	if($size<1024)
	{
		return $size." bytes";
	}
	else if($size<(1024*1024))
	{
		$size=round($size/1024,1);
		return $size." KB";
	}
	else if($size<(1024*1024*1024))
	{
		$size=round($size/(1024*1024),1);
		return $size." MB";
	}
	else
	{
		$size=round($size/(1024*1024*1024),1);
		return $size." GB";
	}

}

$path="/httpd/html/pradeep/";
$ar=getDirectorySize($path);

echo "<h4>Details for the path : $path</h4>";
echo "Total size : ".sizeFormat($ar['size'])."<br>";
echo "No. of files : ".$ar['count']."<br>";
echo "No. of directories : ".$ar['dircount']."<br>";

//print_r($ar);
?>