条纹。每月订阅

我想用Stripe和PHP实现每月订阅。我遵照指示: https://stripe.com/docs/recipes/subscription-signup#creating-the-signup-form-using-checkout

2-Index.php:

<form action="create_subscription.php" method="POST">
  <script
    src="https://checkout.stripe.com/checkout.js" class="stripe-button"
    data-key="pk_test_SomeNumbersAndLetters"
    data-image="images/stripe.png"
    data-name="F. subscription"
    data-description="9.99 montly fee"
    data-amount="999"
    data-label="Sign Me Up!">
  </script>
</form>

3-创建\u subscription.php。我安装了Composer,我想,它工作得很好

require_once('vendor/autoload.php');
\Stripe\Stripe::setApiKey("sk_test_SomeNumbersAndLetters");

try
{
  $customer = \Stripe\Customer::create(array(
    'email' => $_POST['stripeEmail'],
    'source'  => $_POST['stripeToken'],
  ));

  $subscription = \Stripe\Subscription::create(array(
    'customer' => $customer->id,
    'items' => array(array('plan' => 'weekly_box')),
  ));

  header('Location: thankyou.php');
  exit;
}
catch(Exception $e)
{
  header('Location:oops.php');
  error_log("unable to sign up customer:" . $_POST['stripeEmail'].
    ", error:" . $e->getMessage());
}

如果我明白的话,我必须更改计划的id。我应该把它放哪儿?
如果我明白的话,我还得换脱衣舞和脱衣舞邮件。如果是的话,我从哪里得到的,我必须把它放在哪里?