/** * Transfer MongoDate to string * @param $mongoDate, MongoDate object. * @return String * @author Devin Jin **/ public static function MongoDate2String($mongoDate, $format = 'Y-m-d H:i:s', $timezoneOffset = null) { if (empty($mongoDate)) { return ''; } return TimeUtil::msTime2String($mongoDate->sec * TimeUtil::MILLI_OF_SECONDS, $format); }