Question

目前，我可以设置并保持所选产品的名称和价格到我的会话数组中。我需要扩展，以便我可以保持数量和身份。我不知道如何将更多的值存储到同一个数组中，如果可能的话，密钥是id？其次，我需要检查用户是否再次按下，然后只需添加数量，其余信息保持不变？

$id = isset($_GET['id']) ? $_GET['id'] : "";
$name = isset($_GET['name']) ? $_GET['name'] : "";
$price = isset($_GET['price']) ? $_GET['price'] : "";
$quantity = isset($_GET['quantity']) ? $_GET['quantity'] : "";

/*
 * check if the 'cart' session array was created
 * if it is NOT, create the 'cart' session array
 */
if(!isset($_SESSION['cart_items'])){
    $_SESSION['cart_items'] = array();
}

// check if the item is in the array, if it is, do not add
if(array_key_exists($id, $_SESSION['cart_items'])){
    // redirect to product list and tell the user it was added to cart
    header('Location: products.php?action=exists&id' . $id . '&name=' . $name);
}

// else, add the item to the array
else{
    $_SESSION['cart_items'][$name]=$price;

    // redirect to product list and tell the user it was added to cart
    header('Location: products.php?action=added&id' . $id . '&name=' . $name);
}

Answer 1

我想你可能想要使用multidimensional array。

// else, add the item to the array
else{
    $_SESSION['cart_items'][$name]['price']=$price;

    if (!empty($quantity)){
        $_SESSION['cart_items'][$name]['quantity']=$quantity;
    }

    // redirect to product list and tell the user it was added to cart
    header('Location: products.php?action=added&id' . $id . '&name=' . $name);
}

更新：为了访问数组的更深层次，您可以使用嵌套循环。

foreach($_SESSION['cart_items'] as $name=>$value){
    foreach($value as $key => $val){
        echo "$name : $key = $val <br/>\n";
    }
}

如何扩展我的会话数组以获得更多价值？

1 个答案: