/** * * @param PaymentButton $button * @return string */ public function generateHash(array $params) { $hashParams = array('merchant_id' => $this->client->getMerchantId(), 'amount' => $params['amount'], 'descr' => $params['descr']); if (isset($params['order_id'])) { $hashParams['order_id'] = $params['order_id']; } if (isset($params['product_id'])) { $hashParams['product_id'] = $params['product_id']; } if (isset($params['user_id'])) { $hashParams['user_id'] = $params['user_id']; } if (isset($params['url'])) { $hashParams['url'] = $params['url']; } if (isset($params['restricted'])) { $hashParams['restricted'] = (int) (bool) $params['restricted']; } $hashParams['time'] = $params['time']; return $this->client->generateHashRequest(array_values($hashParams)); }