Exchange

The SDK includes functionality to make it very easy to setup your exchange handler, and process your orders.

<?php
 
# Include your autoload.php
require '../vendor/autoload.php';

use PayNL\Sdk\Util\Exchange;
use Throwable;

# Instantiate exchange object
$exchange = new Exchange();

try {
    # Process the exchange request. This will take care of any type of exchange: GET, POST and even requests.
    # This function will return a payOrder object or throws an exception when something went wrong.
    $payOrder = $exchange->process();

    if ($payOrder->isPending()) {
        $responseResult = yourCodeToProcessPendingOrder($payOrder->getReference());
        $responseMessage = 'Processed pending';
    } elseif ($payOrder->isPaid()) {
        $responseResult = yourCodeToProcessPaidOrder($payOrder->getReference());
        $responseMessage = 'Processed paid. Order: ' . $payOrder->getReference();
    } else {
        $responseResult = true;
        $responseMessage = 'No action defined for payment state ' . $payOrder->getStateId();
    }
      
} catch (Throwable $exception) {
    $responseResult = false;
    $responseMessage = $exception->getMessage();
}

# Finally respond to Pay. by using setResponse:
$exchange->setResponse($responseResult, $responseMessage);

See also the sample in the repository.

The payOrder object has multiple useful methods, such as:

Function	Description
isPaid	To check whether the payment was fully paid
isFastCheckout	To determine whether the transaction is a fastCheckout-transaction
getReference	To retrieve your payment reference