<?php
function check_telefoon($nr,$gsm=1) {
	return (preg_match("/^([0-9]{3})\/([0-9]{6})$/",$nr) || preg_match("/^([0-9]{2})\/([0-9]{7})$/",$nr) || ($gsm == 1 && preg_match("/^([0-9]{4})\/([0-9]{6})$/",$nr)) );
}
?>