如何在php

Question

我有情况，我需要显示异常中捕获的错误，我想在catch（）块之外显示或使用该错误 我的代码是

$error;
try {

    $customer = \Stripe\Customer::create(array(
                                               "description"=>"Customer",
                                               "source" => $token,
                                               "email" => $email,
                                               "plan" => "armorax"
                                               )
                                         );

    $payment = \Stripe\Charge::create(array(
                                            'amount'        => $amount,
                                            'currency'      => 'usd',

                                            'description'   => $_POST['description'],
                                            "customer" => $customer->id

                                            )
                                      );

}
catch(\Stripe\Error\Card $e) {

    $body = $e->getJsonBody();
    $err  = $body['error'];
    $error= 'Status is:' . $e->getHttpStatus() . "\n";
    //If i use print('Status is:' . $e->getHttpStatus()) then error is get printed here but i don't need to print error here. 
}

//SOme HTML CODE I want to show error below but it is not showing here
<div class="alert"><?php echo $error; ?></div>

我想在catch块之外显示$ error，如上例所示，但它没有打印任何错误

请帮忙

Answer 1

您可以使用全局变量：

$GLOBALS['myError'] = "Status is:" . $e->getHttpStatus() . "\n";

然后：

<div class="alert"><?php echo $GLOBALS['myError']; ?></div>

或者简单地说：

global $error = "Status is:" . $e->getHttpStatus() . "\n";

然后：

<div class="alert"><?php echo $error; ?></div>

了解有关PHP中全局变量和变量范围的更多信息

http://php.net/manual/en/reserved.variables.globals.php
http://php.net/manual/en/language.variables.scope.php

Answer 2

除了使用全局变量，您还可以为try-catch块之外的异常预定义变量：

$ex = null;
try {
  throw new Exception('Exception thrown inside the try-catch block');
} catch (Throwable $ex) {
 // Empty catch to save the exception.
}

if (!is_null($ex)) {
  echo $ex->getMessage();
}

请注意，变量不是修改作用域所必需的，而是在没有得到PHP通知的情况下调用is_null。 使用php -a在本地运行代码。
我使用了7.3.19