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麦色瑟斯
2019-07-22 17:08:24
<?php
require '../tools.func.php';
require '../db.func.php';
// 1. 接收商品 id
$product_id = intval($_GET['product_id']);
// 2. 接收数量
$quantity = intval($_GET['quantity']);
if (empty($product_id) || empty($quantity)) {
header('location: index.php');
exit;
}
$prefix = getDBPrefix();
$sql = "SELECT id, name, price, code, description
FROM {$prefix}product WHERE id = '$product_id'";
$product = queryOne($sql);
if(!empty(getSession('username','shop'))){
$uid=getSession('id','shop');
$sql="SELECT id,products,price,quantity,uid FROM {$prefix}cart WHERE uid='$uid'";
$cart=queryOne($sql);
if (!empty($cart)) {
// 更新记录
$products = json_decode($cart['products'], true);
if (array_key_exists($product_id, $products)) {
$products[$product_id]['quantity'] += $quantity;
} else {
$products[$product_id] = ['quantity' => $quantity, 'product' => $product];
}
$products = addslashes(json_encode($products));
$cart_price = $cart['price'] + $quantity * $product['price'];
$cart_quantity = $cart['quantity'] + $quantity;
$sql = "UPDATE {$prefix}cart
SET products = '$products', price = '$cart_price', quantity = '$cart_quantity'
WHERE id = '{$cart['id']}'";
execute($sql);
} else {
// 生成 products, price, quantity, uid, created_at
$products[$product_id] = ['quantity' => $quantity, 'product' => $product];
$price = $product['price'] * $quantity;
$created_at = date('Y-m-d H:i:s');
// 添加新的数据
$products = addslashes(json_encode($products)); // \' \"
$sql = "INSERT INTO {$prefix}cart(products, price, quantity, uid, created_at)
VALUES('$products', '$price', '$quantity', '$uid', '$created_at')";
execute($sql);
}
header('location: cart.php');
// json [{2: {quantity: 4, product: {id: , price: }}}, {}]
}else{
}
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