/**
* Return the date of the first day in the month view grid.
*
* This is not necessarily the last day of the specified month, rather it is the date of
* the final grid cell which could be anything upto 6 days into the next month.
*
* @param string $month
* @param int $start_of_week
*
* @return bool|string (Y-m-d)
*/
protected function calculate_final_cell_date($month, $start_of_week = null)
{
if (null === $start_of_week) {
$start_of_week = (int) get_option('start_of_week', 0);
}
$last_day = TribeDateUtils::last_day_in_month($month);
$end_of_week = TribeDateUtils::week_ends_on($start_of_week);
if ($end_of_week < $last_day) {
$end_of_week += 7;
}
$diff = $end_of_week - $last_day;
if ($diff >= 0) {
$diff = "+{$diff}";
}
try {
$date = new DateTime($month);
$date = new DateTime($date->format('Y-m-t'));
$date->modify("{$diff} days");
return $date->format(TribeDateUtils::DBDATEFORMAT);
} catch (Exception $e) {
return false;
}
}