public static function &getInstance() { if (self::$_instance == null) { self::$_instance = new self(); } return self::$_instance; }
/** * 执行原生sql * @param $sql * @param $values * @param bool $readOnly * @param int $fetchModel * @return array|int */ public function operateByNativeSql($sql, $values = array(), $readOnly = true, $fetchModel = PDO::FETCH_ASSOC) { return Model_Mobile_PropRedDot::getInstance()->operateByNativeSql($sql, $values, $readOnly, $fetchModel); }