function getCorrespondingMetadates($termin_id, $begin = '', $end = '', $seminar_id = '') { $termin = new SingleDate($termin_id); if (!$termin->getMetaDateID()) { return false; } if (!$seminar_id) { $seminar_id = $termin->getRangeID(); } $sem = new Seminar($seminar_id); $turnus = $sem->getFormattedTurnusDates(); return $turnus[$termin->getMetaDateID()]; }