<?php require 'ConfigFactory.php'; require 'OAuthRequest.php'; $c = new Creds(); $creds = $c->creds(); $links = $c->links(); $accessTokenData = getAccessToken($links, $creds); $paymentId = ""; $payment = new OAuthRequest($endpoint['getPaymentById'], $accessTokenData, null, $paymentId); $payment->createHeader(); echo $payment->sendRequest();