public static function verteiltDatum($arrZuVerteilen, $return = array()) { foreach ($arrZuVerteilen as $firstDays) { $strDateFrom = $firstDays->cal_mulai; $strDateTo = $firstDays->cal_akhir; $arrAllDates = TahunAjaran::createDateRangeArray($strDateFrom, $strDateTo); foreach ($arrAllDates as $dates) { $return[$dates][] = $firstDays; } } return $return; }