PHP+redis实现的购物车单例类示例_php技巧_

redis=new Redis(); $this->redis->connect('127.0.0.1',6379); } //私有化的克隆方法 private function __clone() { } //公有的静态方法 static public function getInstance() { if(!(self::$_instance instanceof self)){ self::$_instance = new CartSingleton(); } return self::$_instance; } /** * 加入购物车 * * @author YING * @param userId goodsName goodsId 用户id 商品名称 商品id * @return int */ public function addCart($userId,$goodsName,$goodsId) { $hashKey="user_".$userId; //hash键名 $key=$goodsId."_".$goodsName;//键名 //加入 return $this->redis->hIncrBy($hashKey,$key,1); } /** * 单删 * * @author YING * @param userId goodsId * @return */ public function cartDelOne($userId,$goodsId) { $hashKey="user_".$userId; //hash键名 $key=$goodsId;//键名 //删除 return $this->redis->hDel($hashKey,$key); } /** * 清空购物车 * * @author YING * @param userId * @return void */ public function cartDelAll($userId) { $hashKey="user_".$userId; //hash键名 //删除 return $this->redis->del($hashKey); } /** * 购物车列表 * * @author YING * @param userId * @return void */ public function cartList($userId) { $hashKey="user_".$userId; //hash键名 //查询数据 return $this->redis->hGetAll($hashKey); } } //实例化类 $obj=CartSingleton::getInstance();