How to implement php shopping cart-PHP Problem-php.cn

How to implement php shopping cart

藏色散人

Release： 2023-02-26 17:20:01

Original

3926 people have browsed it

How is the php shopping cart implemented?

Simple implementation of shopping cart in PHP

First, determine whether to log in,

if(isset($_session[&#39;user_id&#39;])){
存在；
把用户id和商品id，加入购物车表
}else{
不存在；
使用cookie把商品ID和主机IP放入一个数组
，把这个数组存入cookie；
浏览器允许存放300个cookie，
每个cookie的大小为4KB，足以满足购物车的要求，同时也
减轻了服务器的负荷
}

Copy after login

If the browser disables cookies, use memcache to implement it

Another method, determine whether to log in,

if(isset($memcache->get(&#39;user_id&#39;))){
存在；
把用户id和商品id，加入购物车表
}else{
不存在；
$memcache = new Memcache(); //实例化memchche
$data=[&#39;goods_id&#39;=>$goods_id,&#39;ip&#39;=>$_SERVER
[&#39;REMOTE_ADDR&#39;]];
$memcache->set(&#39;key键&#39;,serialize($data));
}

Copy after login

There is not much difference between redis implementation and memcache!

memcache code is as follows

$cart=new Cart();
        $goods_id = isset($_GET[&#39;goods_id&#39;]) ? $_GET[&#39;goods_id&#39;] : &#39;1&#39;;
        $session = \yii::$app->session;
//        $session->set(&#39;user_id&#39;,&#39;1&#39;);
        $user_id = $session->get("user_id");
        $mem = Yii::$app->cache;
        if(isset($user_id)){
            $data[&#39;user_id&#39;] = $user_id;
            $data[&#39;goods_id&#39;] = $goods_id;
            $is_add=$cart->setAttributes($data)->insert();
        }else{
            $data[&#39;user_id&#39;] = $_SERVER[&#39;REMOTE_ADDR&#39;];
            $data[&#39;goods_id&#39;] = $goods_id;
            $mem->set(&#39;data&#39;,serialize($data));
        }
        unserialize($mem->get(&#39;data&#39;));    //memcache数据

Copy after login

Both of the above methods can be implemented. If we use the first one, we have to set the cookie expiration time. If we use the second If so, you need to deserialize (unserialize()) when getting the value, and then you can get the data you want!

For more PHP related knowledge, please visit PHP Chinese website!

The above is the detailed content of How to implement php shopping cart. For more information, please follow other related articles on the PHP Chinese website!