/**
* Gets a given occurence on a given day-of-week.
*
* @param int $curdate The current timestamp of an occurence.
* @param int $day_of_week The index of a given day-of-week.
* @param int $week_of_month The index of a given week-of-month.
*
* @return int The timestamp of the requested occurrence.
*/
private function getNthDayOfWeek($curdate, $day_of_week, $week_of_month)
{
if ($week_of_month == -1) {
// LAST WEEK
$nextdate = Tribe__Date_Utils::get_last_day_of_week_in_month($curdate, $day_of_week);
// If the date returned above is the same as the date we're starting from
// move on to the next month by interval to consider.
if ($curdate == $nextdate) {
$curdate = mktime(0, 0, 0, date('n', $curdate) + $this->months_between, 1, date('Y', $curdate));
$nextdate = Tribe__Date_Utils::get_last_day_of_week_in_month($curdate, $day_of_week);
}
return $nextdate;
} else {
// get the first occurrence of the requested day of the week from the requested $curdate's month
$first_occurring_day_of_week = Tribe__Date_Utils::get_first_day_of_week_in_month($curdate, $day_of_week);
// get that day of the week in the requested nth week
$maybe_date = strtotime(date(Tribe__Events__Pro__Date_Series_Rules__Rules_Interface::DATE_FORMAT, $first_occurring_day_of_week) . ' + ' . ($week_of_month - 1) . ' weeks');
// if $maybe_date equals or is before the $curdate, then try next month
// (this should only be true if $week_of_month is 1)
if (date(Tribe__Events__Pro__Date_Series_Rules__Rules_Interface::DATE_ONLY_FORMAT, $maybe_date) <= date(Tribe__Events__Pro__Date_Series_Rules__Rules_Interface::DATE_ONLY_FORMAT, $curdate)) {
// get the first day of the next month according to $this->months_between
$next_month = mktime(0, 0, 0, date('n', $curdate) + $this->months_between, 1, date('Y', $curdate));
// Get the first occurrence of the requested day of the week from $next_month's month
$first_occurring_day_of_week = Tribe__Date_Utils::get_first_day_of_week_in_month($next_month, $day_of_week);
// Get that day of the week in the requested nth week
$maybe_date = strtotime(date(Tribe__Events__Pro__Date_Series_Rules__Rules_Interface::DATE_FORMAT, $first_occurring_day_of_week) . ' + ' . ($week_of_month - 1) . ' weeks');
}
// if $maybe_date doesn't have the same month as $first_occurring_day_of_week, keep incrementing by $this->months_between
// until they do, but don't infinitely loop past the 'recurrenceMaxMonthsAfter' setting
$i = 0;
while (date('n', $maybe_date) != date('n', $first_occurring_day_of_week) && $i <= tribe_get_option('recurrenceMaxMonthsAfter', 24)) {
$next_month = mktime(0, 0, 0, date('n', $first_occurring_day_of_week) + $this->months_between, 1, date('Y', $first_occurring_day_of_week));
$first_occurring_day_of_week = Tribe__Date_Utils::get_first_day_of_week_in_month($next_month, $day_of_week);
$maybe_date = strtotime(date(Tribe__Events__Pro__Date_Series_Rules__Rules_Interface::DATE_FORMAT, $first_occurring_day_of_week) . ' + ' . ($week_of_month - 1) . ' weeks');
$i += $this->months_between;
}
return $maybe_date;
}
}
