Recurly_Client::getPdf PHP Метод

    public function getPdf($uri, $locale = null)
    {
        if (substr($uri, 0, 4) != 'http') {
            $uri = $this->baseUri() . $uri;
        }
        if (is_null($locale)) {
            $locale = $this->_acceptLanguage;
        }
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $uri);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, TRUE);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, FALSE);
        curl_setopt($ch, CURLOPT_MAXREDIRS, 1);
        curl_setopt($ch, CURLOPT_HEADER, FALSE);
        // do not return headers
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
        curl_setopt($ch, CURLOPT_TIMEOUT, 15);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Accept: application/pdf', Recurly_Client::__userAgent(), 'Accept-Language: ' . $locale));
        curl_setopt($ch, CURLOPT_USERPWD, $this->apiKey());
        $response = curl_exec($ch);
        if ($response === false) {
            $errorNumber = curl_errno($ch);
            $message = curl_error($ch);
            curl_close($ch);
            $this->_raiseCurlError($errorNumber, $message);
        }
        curl_close($ch);
        return $response;
    }

 /**
  * Retrieve the PDF version of an invoice
  */
 public static function getInvoicePdf($invoiceNumber, $locale = null, $client = null)
 {
     $uri = self::uriForInvoice($invoiceNumber);
     if (is_null($client)) {
         $client = new Recurly_Client();
     }
     return $client->getPdf($uri, $locale);
 }