Pop\Curl\Curl::execute PHP Метод

    public function execute()
    {
        // Set query data if there is any
        if (count($this->fields) > 0) {
            if ($this->isPost()) {
                $this->setOption(CURLOPT_POSTFIELDS, $this->fields);
            } else {
                $url = $this->options[CURLOPT_URL] . '?' . http_build_query($this->fields);
                $this->setOption(CURLOPT_URL, $url);
            }
        }
        $this->response = curl_exec($this->curl);
        if ($this->response === false) {
            $this->showError();
        }
        // If the CURLOPT_RETURNTRANSFER option is set, get the response body and parse the headers.
        if (isset($this->options[CURLOPT_RETURNTRANSFER]) && $this->options[CURLOPT_RETURNTRANSFER] == true) {
            $this->headerSize = $this->getInfo(CURLINFO_HEADER_SIZE);
            if ($this->options[CURLOPT_HEADER]) {
                $this->header = substr($this->response, 0, $this->headerSize);
                $this->body = substr($this->response, $this->headerSize);
                $this->parseHeaders();
            } else {
                $this->body = $this->response;
            }
        }
        return $this->response;
    }

 /**
  * Send transaction
  *
  * @param  boolean $verifyPeer
  * @return void
  */
 public function send($verifyPeer = true)
 {
     $this->buildRateRequest();
     $options = array(CURLOPT_POST => true, CURLOPT_POSTFIELDS => $this->accessRequest . $this->rateRequest, CURLOPT_HEADER => false);
     if (!$verifyPeer) {
         $options[CURLOPT_SSL_VERIFYPEER] = false;
     }
     $curl = new Curl($this->url, $options);
     $curl->execute();
     $this->response = simplexml_load_string($curl->getBody());
     $this->responseCode = (int) $this->response->Response->ResponseStatusCode;
     if ($this->responseCode == 1) {
         $this->responseMessage = (string) $this->response->Response->ResponseStatusDescription;
         foreach ($this->response->RatedShipment as $rate) {
             $this->rates[self::$services[(string) $rate->Service->Code]] = (string) $rate->TotalCharges->MonetaryValue;
         }
     } else {
         $this->responseCode = (string) $this->response->Response->Error->ErrorCode;
         $this->responseMessage = (string) $this->response->Response->Error->ErrorDescription;
     }
 }