/** * Checks id the dates for the calendar are valid * * @param $start Date string in this format: Y-m-d i.e. 2015-06-22 * @param $end Date string in this format: Y-m-d i.e. 2015-06-22 */ public static function check_if_valid_start_end_date_calendar_or_die($start, $end) { // Check if start date is valid $start_parsed = Resource_Booking_Ajax_Common::check_if_valid_date_or_die($start); // Check if end date is valid $end_parsed = Resource_Booking_Ajax_Common::check_if_valid_date_or_die($end); // Check if start < end Resource_Booking_Ajax_Common::check_if_start_time_before_end_or_die($start_parsed, $end_parsed); }