public static function weeklyEvent($event, $start, $end)
{
$weeklyEvents = array();
$period = static::periodDay($event->day_of_week, $start, $end);
foreach ($period as $periodFrom) {
$periodTo = clone $periodFrom;
$periodFrom->add(Calendar::timeInterval($event->time_from));
$periodTo->add(Calendar::timeInterval($event->time_to));
$weeklyEvents[] = array('start' => $periodFrom->format(\DateTime::ISO8601), 'end' => $periodTo->format(\DateTime::ISO8601));
}
return $weeklyEvents;
}
