Search for PHP example new stripe "checkout" integration stripe-php

Question

What do I have to change in my code to immigrate from legacy stripe checkout to the new checkout?? I am confused with their wording. And most examples I find are old (2015-1016...and are the "old way") Stripe wants me to upgrade to new checkout because of SCA

This is my working stripe checkout, I have a button that opens the checkout box

<script>
var handler = StripeCheckout.configure({
  key: '<? echo $stripe_p_key;?>',
  image: 'https://stripe.com/img/documentation/checkout/marketplace.png',
  locale: 'auto',
  token: function(token) {
    var $form = $('#f2');
    var token = token.id;
    showloader('loaderid');
        $form.prepend($('<input type="hidden" style="display:none" name="stripeToken">').val(token));
        $form.prepend($('<input type="hidden" style="display:none" name="cc_currency">').val('<? echo $dialog_waehrung_kreditkarte;?>'));
      $form.get(0).submit();  

  }
});

document.getElementById('customButton').addEventListener('click', function(e) {
  // Open Checkout with further options:
  handler.open({
    name: '',
    description: '<? echo $dialog_titel;?>',
    zipCode: true,
    currency: '<? echo $dialog_waehrung_kreditkarte;?>',
    email: '<? echo $dialog_email_kreditkarte;?>',
    amount: <? echo $dialog_preis_kreditkarte;?>
  });
  e.preventDefault();
});

// Close Checkout on page navigation:
window.addEventListener('popstate', function() {
  handler.close();
});
</script>

then I charge the card in the next step

    Stripe::setApiKey($params['private_live_key']);
    $pubkey = $params['public_live_key'];
    try {
        $charge = Stripe_Charge::create(array(       
              "amount" => $amount_cents,
              "currency" => $_SESSION['cc_currency'],
              "source" => $_SESSION['stripeToken'],
              "description" => $description,
        "expand" =>array("balance_transaction")
        )             
        );

If no error is thrown I forward the customer to his download page.

I want a very simple way, I do not need customers, bills, recruing payments or whatever..just single payments. I do not want customers address or such things. Payment and goodbye...

Stripe says I have to change this process. But their example is confusing for me: https://stripe.com/docs/payments/checkout/migration#api-products (I did never create a customer for exampley...why should I?)

Can someone tell me what I have to do to migrate to the new checkout version?

Answer 1

Basic setup (you can build it up from here)

Back-end:

Update your Stripe PHP Library.

Change from \Stripe\Charge to \Stripe\PaymentIntent following this format:

$charge = \Stripe\Charge::create([
    'source' => $token_id,
    'amount' => $amount,
    'currency' => 'usd',
]);

---

$intent = \Stripe\PaymentIntent::create([
        'payment_method_data' => [
            'type' => 'card',
            'card' => ['token' => $token_id],
        ],
        'amount' => $amount,
        'currency' => 'usd',
        'confirmation_method' => 'manual',
        'confirm' => true,
    ]);

---

Front-end:

Update your Stripe JS to use v3.

<script src='https://js.stripe.com/v3/' type='text/javascript'></script>

Update JS code that handles your payment form:

document.addEventListener("DOMContentLoaded", function(event) {
    var stripe = Stripe('xxxxxxxxxx'); // test publishable API key
    var elements = stripe.elements();

    var card = elements.create('card');
    // Add an instance of the card UI component into the `card-element` <div>
    card.mount('#card-element');

    // Handle events and errors
    card.addEventListener('change', function(event) {
      var displayError = document.getElementById('card-errors');
      if (event.error) {
        displayError.textContent = event.error.message;
      } else {
        displayError.textContent = '';
      }
    });

    function stripeTokenHandler(token) {
      // Insert the token ID into the form so it gets submitted to the server
      var form = document.getElementById('payment-form');
      var hiddenInput = document.createElement('input');
      hiddenInput.setAttribute('type', 'hidden');
      hiddenInput.setAttribute('name', 'stripeToken');
      hiddenInput.setAttribute('value', token.id);
      form.appendChild(hiddenInput);

      // Submit the form
      form.submit();
    }

    function createToken() {
      stripe.createToken(card).then(function(result) {
        if (result.error) {
          // Inform the user if there was an error
          var errorElement = document.getElementById('card-errors');
          errorElement.textContent = result.error.message;
        } else {
          // Send the token to your server
          stripeTokenHandler(result.token);
        }
      });
    };

    // Create a token when the form is submitted.
    var form = document.getElementById('payment-form');
    form.addEventListener('submit', function(e) {
      e.preventDefault();
      createToken();
    });
});

Edit your HTML form:

    <form action="process_payment.php" method="post" id="payment-form">
          <div class="form-row">
            <label for="card-element">
              Credit or debit card
            </label>
            <div id="card-element"><!-- Your form goes here --></div>                  
            </div>        
            <!-- Used to display form errors -->
            <div id="card-errors" role="alert"></div>
          </div>
        <button type="submit">Pay</button>
    </form>

Answer 2

With the new SCA regulations coming in as you mentioned in your comment, you need to use Payment methods and Payment intents now.

Basically from taking a look at your sample code you will need to rewrite pretty much everything (if you haven't already)

Their current docs are here -> https://stripe.com/docs/payments/checkout

The reason for Payment Intents and Payment methods is due to SCA - https://stripe.com/docs/strong-customer-authentication

They have a migration guide too which can be found on the side bar.

However from their examples this is how you would create your new payment intent

$intent = \Stripe\PaymentIntent::create([
    'amount' => 1099,
    'currency' => 'gbp',
]);

Here is also their guide for migrating from the charges API - it has a tab for stripe.js V2 if you've been using it https://stripe.com/docs/payments/payment-intents/migration

Answer 3

I agree. We have been using Stripe Checkout for about a year. The original implementation was dead easy. Trying to migrate to SCA compliant code is just a mess. Their online Chat is useless, and from the response in Chat, they bascially don't care if you stay with them or go. We're going to revert to PayPal which we used before and look for an alternative payment processor.