更新数量会话数组

Question

我需要帮助

这是我的会话数组：

Array
(
    [menu] => 
    [id] => 3
    [products] => Array
        (
            [0] => Array
                (
                    [id] => 1
                    [name] => Produkt 1
                    [code] => 1
                    [varianta] => 
                    [pocet] => 1
                    [price] => 20
                    [pricepredtym] => 40
                )

            [1] => Array
                (
                    [id] => 2
                    [name] => Produkt 1
                    [code] => 1
                    [varianta] => 
                    [pocet] => 1
                    [price] => 20
                    [pricepredtym] => 40
                )

        )

)

我需要类似if（$ _GET [id] == $ _SESSION [＆＃39; products＆＃39;] [id]）之类的内容，并且只更改此内容＆＃34; [pocet]＆＃34;其中[id] = 2

$ _ GET [id] = 2;  的 $ pocet = 5;

[1] => Array
                (
                    [id] => 2
                    [name] => Produkt 1
                    [code] => 1
                    [varianta] => 
                    [pocet] => 5
                    [price] => 20
                    [pricepredtym] => 40
                )

Answer 1

将您的GET值与2进行比较，并将其用作SESSION数组的键。

if ($_GET['id'] == '2'){
    $_SESSION['products'][$_GET['id']]['pocet'] = '5';
}

Answer 2

您可以按产品ID索引products数组。然后更新就是：

if(isset($_SESSION['products'][$prod_id])) {
    $_SESSION['products'][$prod_id]['pocet'] = $pocet;
}

否则，使用foreach循环：

foreach ($_SESSION['products'] as $i => $prod) {
    if ($prod['id'] == $prod_id) {
        $_SESSION['products'][$i]['pocet'] = $pocet;
        break;
    }
}