function shows the file size of a directory

// This function shows the file size of aparticular
function show_dir($dir){
// global $totalsize;
$handle = @opendir($dir);
while ($file = @readdir($handle)){
$size=filesize($dir.$file);
$totalsize=$totalsize+$size;
}
@closedir($handle);
if($totalsize==8192){$totalsize=0;}
return($totalsize);
}