HttpRequestService::call PHP Method

    public function call($url, $method, $postFields = null, $username = null, $password = null, $contentType = null)
    {
        if (strrpos($url, 'https://') !== 0 && strrpos($url, 'http://') !== 0 && !empty($this->format)) {
            $url = "{$this->api_url}{$url}.{$this->format}";
        }
        $this->http_url = $url;
        $this->contentType = $contentType;
        $this->postFields = $postFields;
        $url = in_array($method, self::$paramsOnUrlMethod) ? $this->to_url() : $this->get_http_url();
        is_object($this->ch) or $this->__construct();
        switch ($method) {
            case 'POST':
                curl_setopt($this->ch, CURLOPT_POST, true);
                if ($this->postFields != null) {
                    curl_setopt($this->ch, CURLOPT_POSTFIELDS, $this->postFields);
                }
                break;
            case 'DELETE':
                curl_setopt($this->ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
                break;
            case 'PUT':
                curl_setopt($this->ch, CURLOPT_PUT, true);
                if ($this->postFields != null) {
                    $this->file = tmpFile();
                    fwrite($this->file, $this->postFields);
                    fseek($this->file, 0);
                    curl_setopt($this->ch, CURLOPT_INFILE, $this->file);
                    curl_setopt($this->ch, CURLOPT_INFILESIZE, strlen($this->postFields));
                }
                break;
        }
        $this->setAuthorizeInfo($username, $password);
        $this->contentType != null && curl_setopt($this->ch, CURLOPT_HTTPHEADER, array('Content-type:' . $this->contentType));
        curl_setopt($this->ch, CURLOPT_URL, $url);
        $response = curl_exec($this->ch);
        $this->http_code = curl_getinfo($this->ch, CURLINFO_HTTP_CODE);
        $this->http_info = array_merge($this->http_info, curl_getinfo($this->ch));
        $this->close();
        return $response;
    }