php - 使用 PHP 将数组中的值插入 mysql

Question

我对此有些挣扎。希望有人可以指导我一点。

我正在尝试获取 mysql 中的购物车篮产品(在本例中不是 session )，并将它们移至结帐时的“订单详细信息”表。

产品数组已正确创建并正确输出键和值，但我的问题是当我尝试将数组值插入另一个表时。

这是代码:

$cart_products = array(); 
$stmt = $conn->prepare("SELECT 
SUM(co.cart_quantity) AS quantity, 
p.product_id, 
p.product_name, 
SUM(p.product_price) AS price, 
p.short_description, 
SUM(p.product_weight) AS weight, 
p.vat 

FROM cart_orders AS co 
LEFT JOIN products AS p 
ON co.cart_product_id = p.product_id 
LEFT JOIN vat_rates AS vr 
ON p.vat = vr.vat_id 
WHERE cart_user_id = ? 
GROUP BY co.cart_product_id 
ORDER BY co.cart_product_id"); 


$stmt->bind_param('i', $user_id); 
$stmt->bind_result($quantity,$p_product_id,$p_product_name,$price,$p_short_description,$weight,$p_vat); 
$stmt->execute(); 
$stmt->store_result(); 
if($stmt->num_rows() > 0){ 
while ($stmt->fetch()) { 

$cart_products[] = array( 
    "product_id" => $p_product_id, 
    "product_name" => $p_product_name, 
    "product_quantity" => $quantity, 
    "product_price" => $price, 
    "vat_id" => $p_vat 
); 
}} 
$stmt->free_result(); 
$stmt->close(); 


$stmt = $conn->prepare("INSERT INTO order_details(product_id,product_name,product_quantity,product_price,vat_id)
VALUES (?,?,?,?,?)");
$stmt->bind_param('isiii', $cart_products['product_id'],$cart_products['product_name'],$cart_products['product_quantity'],$cart_products['product_price'],$cart_products['vat_id']);
$stmt->execute();
$stmt->close();  

这是我的数组 $cart_products 的输出:

Array 
( 
    [0] => Array 
        ( 
            [product_id] => 5 
            [product_name] => Product A 
            [product_quantity] => 20 
            [product_price] => 2.50 
            [vat_id] => 2 
        ) 

    [1] => Array 
        ( 
            [product_id] => 7 
            [product_name] => Product A 
            [product_quantity] => 10 
            [product_price] => 2.50 
            [vat_id] => 1 
        ) 

    [2] => Array 
        ( 
            [product_id] => 9 
            [product_name] => Product A44544 
            [product_quantity] => 3 
            [product_price] => 2.50 
            [vat_id] => 2 
        ) 

)  

预先感谢您的帮助!

Answer 1

您必须迭代 $cart_products 才能访问每个产品。

$cart_products = array();
if ($stmt->num_rows() > 0) {
    while ($stmt->fetch()) {
        $cart_products[] = array(
            "product_id" => $p_product_id,
            "product_name" => $p_product_name,
            "product_quantity" => $quantity,
            "product_price" => $price,
            "vat_id" => $p_vat
        );
    }
}
$stmt->free_result();
$stmt->close();


$stmt = $conn->prepare("INSERT INTO order_details(product_id,product_name,product_quantity,product_price,vat_id)
VALUES (?,?,?,?,?)");

foreach ($cart_products as $cart_product) {
    $stmt->bind_param('isiii', $cart_product['product_id'], $cart_product['product_name'], $cart_product['product_quantity'], $cart_product['product_price'], $cart_product['vat_id']);
    $stmt->execute();
}