我有条纹检查与 PHP.它创造了客户并为他们收费.我想创建一个捐赠表单,如果同一个客户回来并提供相同的电子邮件地址,StriPE不会创建另一个客户,但会向现有客户收取额外付款.这可能吗？或者结账总是创建具有新客户ID的新客户？

这是我的charge.PHP

<?PHP
    require_once('config.PHP');

    $token  = $_POST['stripeToken'];

    if($_POST) {
      $error = NULL;

      try{
        if(!isset($_POST['stripeToken']))
          throw new Exception("The Stripe Token was not generated correctly");
            $customer = Stripe_Customer::create(array(
              'card'  => $token,'email' =>  $_POST['stripeEmail'],'description' => 'Thrive General Donor'
            ));

            $charge = Stripe_Charge::create(array(
              'customer' => $customer->id,'amount'   => $_POST['donationamount'] * 100,'currency' => 'usd'
            ));
      }
      catch(Exception $e) {
        $eror = $e->getMessage();
      }


    }

?>