This is a simple example project illustrating how to implement Stripe's iDEAL payment method to accept iDEAL payments with a PHP backend.
Deploy the project on your Heroku account:
When deploying, you'll be prompted for your publishable and secret API keys (you can find both of these in the API keys tab of your account settings).
Once the app is running on Heroku, head back to your webhooks settings and add a test webhook endpoint with your app's URL followed by /webhooks.php. E.g. if the URL of the Heroku app is https://thawing-crag-63114.herokuapp.com, set the endpoint's URL to be https://thawing-crag-63114.herokuapp.com/webhooks.php. The webhook must be set to receive at least source.chargeable events.