Question

我将购物车数组保存在Cookie中，然后将其发送到购物车页面。每当我从另一个产品转到某个页面并点击添加到购物车时，它都不会将其添加到数组中，但似乎会覆盖它。

$uri = $_SERVER['REQUEST_URI'];
$pin = explode('/', $uri);
$id = $pin[3]; 

$product = $model->selectById($id, 'carpet');
$product = $product->fetch(PDO::FETCH_ASSOC);

$site_url = site_url();
if(!$product){
    header("Location: $site_url./404");
}

if(isset($_POST['add'])){
    $cart = [];
    $cart[$product['id']] = [];
    $cart[$product['id']]['product_name'] = $product['name'];

    setcookie('cart', serialize($cart), time()+3600);
    $cart = unserialize($_COOKIE['cart']);
     dd($cart);
}

Answer 1

您已经给出了答案：每次运行此脚本时，您都会覆盖购物车。变化：

$uri = $_SERVER['REQUEST_URI'];
$pin = explode('/', $uri);
$id = $pin[3]; 

$product = $model->selectById($id, 'carpet');
$product = $product->fetch(PDO::FETCH_ASSOC);

$site_url = site_url();
if(!$product){
    header("Location: $site_url./404");
}

if(isset($_POST['add'])){

    if ( isset($_COOKIE['cart']) )
         $cart = unserialize($_COOKIE['cart']); // if cookie is set, get the contents of it
    else 
         $cart = []; // else create an empty cart

    // append new product and add to cart
    $cart[$product['id']] = [];
    $cart[$product['id']]['product_name'] = $product['name'];

    setcookie('cart', serialize($cart), time()+3600);
    $cart = unserialize($_COOKIE['cart']);
     dd($cart);
}

Answer 2

问题的第2部分：如何增加产品的订单数量：

    ...
    // is this product alread in cart?
    if ( isset($cart[$product['id']])
         $prod = $cart[$product['id']]; // then pick it
    else
    {
         // create a new product object
         $prod = new stdClass();
         // initialze with name and zer quantity
         $prod->name = $product['name'];
         $prod->quantity = 0;
    }

    // increment quantity
    $prod->quantity ++;

    // reassign to array
    $cart[$product['id']] = $prod;

    ...

如何更新cookie中的数组？

2 个答案: