Admin_MultidateController::EventOrder PHP Метод

    public static function EventOrder($a, $b)
    {
        if (isset($a['start_day']) && isset($b['start_day'])) {
            if ($a['start_day'] > $b['start_day']) {
                return 1;
            }
            if ($a['start_day'] < $b['start_day']) {
                return -1;
            }
        }
        if (isset($a['weight']) && isset($b['weight'])) {
            if ($a['weight'] > $b['weight']) {
                return 1;
            }
            if ($a['weight'] < $b['weight']) {
                return -1;
            }
        }
        if (isset($a['start']) && isset($b['start'])) {
            if ($a['start'] > $b['start']) {
                return 1;
            }
            if ($a['start'] < $b['start']) {
                return -1;
            }
        }
        return 0;
    }