递减时“删除"时的语法错误 [英] syntax error in case 'remove' when decrementing

问题描述

在删除"的情况下，我收到语法错误.我一直在尝试修复它，但我不知道如何解决. 谁能告诉我如何解决?谢谢

I get a syntax error on the case "remove". I've been trying to fix it but I can't figure it out. Can anyone tell me how to fix it?Thanks

该代码用于在线商店购物车

The code is for a online shop shopping cart

switch($action)
{
    case "add":
    if (isset($_SESSION['cart'][$id]))
        $_SESSION['cart'][$id]++;
    else
        $_SESSION['cart'][$id]=1;
break;

case "remove":
    if (isset($_SESSION['cart'][$id]))
    (
        $_SESSION['cart'][$id]--; (ERROR HERE)
        if ($_SESSION['cart'][$id]==0)
            unset($_SESSION['cart'][$id]);
    )
break;

case "empty":
    unset($_SESSION['cart']);
break;

}

推荐答案

您在IF语句中使用括号而不是括号:

You are using parenthesis instead of brackets for your IF statement:

if (isset($_SESSION['cart'][$id]))
( <-- HERE
    $_SESSION['cart'][$id]--; (ERROR HERE)
    if ($_SESSION['cart'][$id]==0)
        unset($_SESSION['cart'][$id]);
) <-- HERE

这篇关于递减时“删除"时的语法错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！