<?php

$user_id=session("user_id");//获取用户登录信息

$goods_id=isset($_POST['goods_id'])?$_POST['goods_id']:0;//获取要添加的商品id

if($user_id<1)

{

    die("用户不存在或者尚未登录");//用户不存在或者尚未登录

}

if($goods_id<1)

{

    die("传参丢失");//传参丢失

}

$goods_info=get_goods_info_by_goods_id($goods_id);//获取商品信息

$redis_object=new Redis();//实例化Redis模型

$my_cart_info=unserialize($redis_object->get("cart_".$user_id));//获取某个人的购物车信息

if(isset($my_cart_info[$goods_id]))

{

    $my_cart_info[$goods_id]['count']++;//数量加 1

}else

{

    //该商品首次加入购物车

    $my_cart_info[$goods_id]=array(

        "count"=>1,

        "info"=$goods_info

    );

}

$redis_object->set("cart_".$user_id,serialize($my_cart_info));//放入Redis

echo json_encode($my_cart_info);

exit();

?>