function getMonthDaysAccordingly(&$event, $month, $year)
{
$byDayArray = $event->getByDay();
$byMonthDays = $event->getByMonthDay();
$resultDays = array();
if (count($byDayArray) == 0) {
$resultDays = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31);
return $resultDays;
}
for ($i = 0; $i < count($byDayArray); $i++) {
if (preg_match('/([-\\+]{0,1})?([0-9]{1})?([A-Z]{2})/', $byDayArray[$i], $byDaySplit)) {
$dayOfWeekday = \TYPO3\CMS\Cal\Controller\Calendar::two2threeCharDays($byDaySplit[3], false);
$monthStartTime = new \TYPO3\CMS\Cal\Model\CalDate($year . '-' . sprintf("%02d", $month) . '-01 00:00:00');
$monthStartTime->setTZbyId('UTC');
$monthEndTime = \TYPO3\CMS\Cal\Controller\Calendar::calculateEndMonthTime($monthStartTime);
if ($byDaySplit[2] > 0) {
if ($byDaySplit[1] == '-') {
$monthTime = new \TYPO3\CMS\Cal\Model\CalDate(Calc::prevDayOfWeek($dayOfWeekday, $monthEndTime->getDay(), $monthEndTime->getMonth(), $monthEndTime->getYear(), '%Y%m%d', true));
$monthTime->setTZbyId('UTC');
$monthTime->subtractSeconds(($byDaySplit[2] - 1) * 604800);
} else {
$monthTime = new \TYPO3\CMS\Cal\Model\CalDate(Calc::nextDayOfWeek($dayOfWeekday, $monthStartTime->getDay(), $monthStartTime->getMonth(), $monthStartTime->getYear(), '%Y%m%d', true));
$monthTime->setTZbyId('UTC');
$monthTime->addSeconds(($byDaySplit[2] - 1) * 604800);
}
if ($monthTime->getMonth() == $month && in_array($monthTime->getDay(), $byMonthDays)) {
$resultDays[] = $monthTime->getDay();
}
} else {
$monthTime = new \TYPO3\CMS\Cal\Model\CalDate(Calc::prevDayOfWeek($dayOfWeekday, $monthStartTime->getDay(), $monthStartTime->getMonth(), $monthStartTime->getYear(), '%Y%m%d', true));
$monthTime->setTZbyId('UTC');
if ($monthTime->before($monthStartTime)) {
$monthTime->addSeconds(604800);
}
while ($monthTime->before($monthEndTime)) {
$resultDays[] = $monthTime->getDay();
$monthTime->addSeconds(604800);
}
}
}
}
$resultDays = array_intersect($resultDays, $event->getByMonthDay());
sort($resultDays);
return $resultDays;
}
