PayPal\Service\PayPalAPIInterfaceServiceService::CreateBillingAgreement PHP Method

    public function CreateBillingAgreement($createBillingAgreementReq, $apiCredential = null)
    {
        $apiContext = new PPApiContext($this->config);
        $handlers = array(new PPMerchantServiceHandler($apiCredential, self::$SDK_NAME, self::$SDK_VERSION));
        $this->setStandardParams($createBillingAgreementReq->CreateBillingAgreementRequest);
        $ret = new CreateBillingAgreementResponseType();
        $resp = $this->call('PayPalAPIAA', 'CreateBillingAgreement', $createBillingAgreementReq, $apiContext, $handlers);
        $ret->init(PPUtils::xmlToArray($resp));
        return $ret;
    }