/** * @param EcommercePaymentRequest $paymentRequest * @return string url */ public function render(EcommercePaymentRequest $paymentRequest) { $parameters = $paymentRequest->toArray(); $parameters[PaymentRequest::SHASIGN_FIELD] = $paymentRequest->getShaSign(); return $paymentRequest->getPostFinanceUri() . '?' . http_build_query($parameters); }