$userBundle = new FormBundle(
			'UserName'=>
				array('index'=>'userName', 'method'=>'validate',
					'options'=>array('regex'=>'/\w{3,25}/')),
			'UserPass'=>
				array('index'=>'userPass', 'method'=>'validate',
					'options'=>array('min_len'=>8, 'max_len'=>50));

function addUser(FormBundle $userBundle)
{
	$userName = $userBundle>safeUserName();
	$userPass = $userBundle>safeUserPass();
	//insert record in database
}