Question

将数组变量存储为cookie时出现问题，然后将单独的数组添加到已包含数组的cookie中

$mysqli = mysqli_connect($db_host,$db_user,$db_pass,$db_base);
        if (mysqli_connect_errno()) 
        {
            printf("Connect failed: %s\n", mysqli_connect_error());
            exit();
        }
        // Displays a message saying product was added to the basket
        $message = $_POST['product_name']." was added to the basket";
        echo "<script>alert(".$message.")</script>";

        // Sets the basket
        $itemID = $_POST['product_id'];
        $itemQuantity = $_POST['product_quantity'];
        if ($itemQuantity > 0)
        {
            $items = [$itemID, $itemQuantity];

            // Returns cookie value as array
            $basket_array = (unserialize($_COOKIE['eg_basket']));

            // Adds to array into cookie array
            $basket = serialize(array_push($basket_array, $items));

            // Sets basket back as cookie
            setcookie('eg_basket', $basket); // will expire on browser close

            // Displays message
            echo "<h3 style='text-align:center'>".$_POST['product_name']." was added to the basket</h3>";
            echo "<br/>";
            echo "<p style='text-align:center'>Please click below to return to the previous page</p>";
        }
        else
        {
            echo "<h3 style='text-align:center'>ERROR: ".$_POST['product_name']." was not added to the basket, invalid quantity given</h3>";
        }

            echo "<form method='POST' action='product_info.php'><input style='display:none' type='number' name='product_id_POST' value='".$_POST['product_id']."'><input style='text-align:center' type='submit' value='Return'></form>";


        // close the connection
        mysqli_close($mysqli);
    ?>

我尝试做的是创建一个cookie，用于存储产品ID的数组; s和数量

e.g。 cookie = [[product_id，quantity]，[product_id，quantity]，.......]; 然而

我很确定情况并非如此，但这是我用来创建购物篮cookie的代码（如果它不存在）（这可能是cookie不接受任何新值的原因

// Checks is cookie is already set - basket only
    if (!isSet($_COOKIE['eg_basket']))
    {
        $basket = serialize([]);
        setcookie('eg_basket', $basket); // will expire on browser close
    }

谢谢，非常感谢任何帮助

牛

Answer 1

如果已经发送了标题，则无法向浏览器发送Cookie，请参阅the manual。

因此，您需要在不回复任何内容的情况下记录您的消息：

echo "<script>alert(".$message.")</script>";

并确保在setcookie()行之前没有其他输出发送到浏览器。

将数组添加到存储在cookie中的数组

1 个答案: