PHP MBID (UUID) format validator

ProcessMBID

function ProcessMBID($string) //check if MBID {           
  return !empty($string) && preg_match('/^\{?[A-Za-z0-9]{8}-[A-Za-z0-9]{4}-[A-Za-z0-9]{4}-[A-Za-z0-9]{4}-[A-Za-z0-9]{12}\}?$/', $string);
  //^[a-f0-9]{8}-([a-f0-9]{4}-){3}[a-f0-9]{12}$
}