<?php require dirname(__DIR__) . '/config.php'; $request = new \Iyzipay\Request\Subscription\SubscriptionRetrieveCustomerRequest(); $request->setCustomerReferenceCode("66c238cf-faf5-4d42-bfed-642d47b74aac"); $result = \Iyzipay\Model\Subscription\SubscriptionCustomer::retrieve($request,Config::options()); print_r($result);