Important information

The API reference is now available here.
The deprecated API reference is available here.


PHP SDK integration

Connect your online shop to Unzer payment system using PHP SDK.

Unzer PHP SDK provides a layer of abstraction on top of Unzer API, simplifying the integration process and making it a convenient choice for PHP based online shopping solutions.

In this part of the documentation, you’ll learn how to start using Unzer PHP SDK, how to handle some common tasks (API errors and notifications), and also what are the essential API resources and how to use them with the SDK.

To learn more how these resources are used, check one of our step-by-step guides on how to integrate a payment method using Payment pages, UI components or server-side-only integration.

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  • If you are currently using the old heidelpay PHP SDK, check the migration guide.
  • Note that heidelpay PHP SDK (heidelpayPHP) is now deprecated and no new features releases are planned.

Next steps