PHP check folder if empty

function check_empty_folder ( $folder )
{
	$files = array ();
	if ( $handle = opendir ( $folder ) ) {
		while ( false !== ( $file = readdir ( $handle ) ) ) {
			if ( $file != "." && $file != ".." ) {
				$files [] = $file;
			}
		}
		closedir ( $handle );
	}
	return ( count ( $files ) > 0 ) ? FALSE : TRUE;
}