如何在php中使用if multiple语句创建变量并打印答案

【问题标题】：How to create variable with if multiple statement in php and print如何在php中使用if multiple语句创建变量并打印
【发布时间】：2020-09-01 18:52:31
【问题描述】：

我需要以下代码的帮助

$selected_payment_option =  'if($payment_mode == "cod"){ echo "Cash on Delivery ";}
                                        if($payment_mode == "stripe"){ echo "Stripe";}
                                        if($payment_mode == "bank"){ echo "Bank";}';

并希望打印为 $selected_payment_option

【问题讨论】：

使用switch statement

标签： javascript php arrays variables

【解决方案1】：

有很多方法可以做到这一点

使用 if-else：

$payment_mode = "bank";
if($payment_mode == "cod")
  $selected_payment_option = "Cash on Delivery";
elseif($payment_mode == "stripe")
  $selected_payment_option = "Stripe";
elseif($payment_mode == "bank")
  $selected_payment_option = "Bank";
else
  $selected_payment_option = "your default value";
print($selected_payment_option)
// output: Bank

使用开关：

$payment_mode = "cash";
switch($payment_mode) {
  case "cod": $selected_payment_option = "Cash on Delivery"; break;
  case "stripe": $selected_payment_option = "Stripe"; break;
  case "bank": $selected_payment_option = "Bank"; break;
  default: $selected_payment_option = "your default value";
}
print($selected_payment_option);
// output: your default value

使用三元运算符：

$payment_mode = "stripe";
$selected_payment_option = $payment_mode == "cod" ? "Cash on Delivery "
  : ($payment_mode == "stripe" ? "Stripe" : ($payment_mode == "bank" ? "Bank" 
  : "your default value"));
print($selected_payment_option);
// output: Stripe

使用逻辑运算符：

$payment_mode = "bank";
$selected_payment_option = "your default value";
$payment_mode == "cod" && ($selected_payment_option = "Cash on Delivery") ||
  $payment_mode == "stripe" && ($selected_payment_option = "Stripe") ||
  $payment_mode == "bank" && ($selected_payment_option = "Bank");
print($selected_payment_option);
// output: Bank

使用关联数组：

$payment_modes = array("cod"=> "Cash on Delivery", "stripe"=> "Stripe", "bank" => "Bank");
$payment_mode = "cod";
$selected_payment_option = array_key_exists($payment_mode, $payment_modes) ?
  $payment_modes[$payment_mode] : "your default value";
print($selected_payment_option);
// output: Cash on Delivery

【讨论】：

【解决方案2】：

请为此类代码使用开关。它还具有捕获 $payment_mode 未设置为值的情况的好处。

function getPaymentOption($payment_mode) {
    switch ($payment_mode) {
        case "cod":
            return "Cash on Delivery";
            break;
        case "stripe":
            return "Stripe";
            break;
        case "bank":
            return "Bank";
            break;
        default:
            return "unknown";
    }
}

这样使用：

$selected_payment_option = getPaymentOption($payment_mode);

【讨论】：