条纹税计算

Question

我正在尝试在我的网站上编辑Stripe税收计算。目前，每笔订单要收取5美元的费用。我想改为3％。因此，将全额收取3％的押金。但是我在编写代码时遇到了麻烦。有人可以帮我吗？

  if(isset($_POST['random_amt'])){
    $price = (double)$_POST['random_amt'].'' + (double)5;
    $name = main_services($_POST['service_box']);
  }elseif(isset($_POST['sub_services'])){

    $price = get_service_price($_POST['sub_services']);
    $name = service_box_arr($_POST['service_box'],$_POST['sub_services']);

  }else{
    $price = get_service_price($_POST['service_box']);
    $name = main_services($_POST['service_box']);
  }

Answer 1

不要直接使用POST值。将其分配给变量

$amount = $_POST['random_amt'];
$serviceBox = $_POST['service_box'];
$subService = $_POST['sub_services'];

if(isset($amount)){
    $price = $amount * 1.03;
    $name = main_services($serviceBox);

  }elseif(isset($subService)){

    $price = get_service_price($subService);
    $name = service_box_arr($serviceBox,$subService);

  }else{
    $price = get_service_price($serviceBox);
    $name = main_services($serviceBox);
  }