Question

我试图在$userId语句中绑定$_SESSION存储的insert select值，但这似乎是错误的。

class Cart {

    public function addToCart($userId, $prodId) {

        $sql = "INSERT INTO `cart` (prod_id, user_id, prod_title, prod_img,quantity, price)
                SELECT product_id, //:user_id//, product_title, product_img, 1, product_price
                FROM  `products`
                WHERE  product_id = :product_id
        ";

        $q = $this->_pdo->prepare($sql);
        $q->execute([ 'user_id' => $userId , 'product_id' => $prodId]); 
    }

}

Answer 1

当你使用命名参数时，你应该在传递给执行函数的数组中使用该名称（而且 - 不确定为什么你有// ...。（在//:user_id//中）。< / p>

检查一下：

$sql = "INSERT INTO `cart` (prod_id, user_id, prod_title, prod_img,quantity, price)
            SELECT product_id, :user_id, product_title, product_img, 1, product_price
            FROM  `products`
            WHERE  product_id = :product_id
    ";

$q = $this->_pdo->prepare($sql);
$q->execute([ ':user_id' => $userId , ':product_id' => $prodId]);

Sql Insert into Select语句PDO

1 个答案: