Initialize Payment

$redirect = $merx->initializePayment([
  'paymentMethod' => 'paypal',
]);
go($redirect); // https://www.paypal.com/cgi-bin/webscr…

Complete Payment

site/templates/success.php

$merx->completePayment([
  'paymentId' => 'PAYID-XXXXXXXXXXXXXXXXXXXXXXXX',
  'PayerID' => 'XXXXXXXXXXXXX'
]);

Since Merx 1.2

With Stripe’s Credit Card integration, your customers can pay without leaving the website. You have to provide the ID of an authorized Payment Intent.

Read the cookbook Checkout with Stripe’s Payment Intents to learn more.

This payment method supports Strong Customer Authentication (SCA).

Initialize Payment

$redirect = $merx->initializePayment([
  'paymentMethod' => 'credit-card-sca',
  'stripePaymentIntentId' => 'pi_XXXXXXXXXXXXXXXXXXXXXXXX'
]);
go($redirect); // /success

Complete Payment

You don’t have to provide any additional information for the completePayment method.

site/templates/success.php

$merx->completePayment():

This payment method shouldn’t be used. It requires an older Stripe API and doesn’t support Strong Customer Authentication (SCA) which is required in the European Union. You should use credit-card-sca instead.

With Stripe’s Credit Card integration, your customers can pay without leaving the website. You need to integrate Stripe’s Card Element to get a stripeToken which you have to provide for initializePayment.

Initialize Payment

$redirect = $merx->initializePayment([
  'paymentMethod' => 'credit-card',
  'stripeToken' => 'tok_XXXXXXXXXXXXXXXXXXXXXXXX'
]);
go($redirect); // /success

Complete Payment

You don’t have to provide any additional information for the completePayment method.

site/templates/success.php

$merx->completePayment():

SEPA Direct Debit works very similar to Credit Card. Create a Stripe IBAN Element to get a stripeToken.

Initialize Payment

$redirect = $merx->initializePayment([
  'paymentMethod' => 'sepa-debit',
  'stripeToken' => 'tok_XXXXXXXXXXXXXXXXXXXXXXXX',
]);
go($redirect); // /success

Complete Payment

You don’t have to provide any additional information for the completePayment method.

site/templates/success.php

$merx->completePayment():

Initialize Payment

$redirect = $merx->initializePayment([
  'paymentMethod' => 'sofort',
]);
go($redirect); // https://www.sofort.com/payment/…

You are redirected to klarna.com where the customer has to accept the payment.

Complete Payment

The redirect url has several get parameters. Use the source parameter for the completePayment method.

site/templates/success.php

$source = get('source'); // src_XXXXXXXXXXXXXXXXXXXXXXXX
$merx->completePayment([
  'source' => $source,
]):