SaeTOAuthV2::http PHP Method

    function http($url, $method, $postfields = NULL, $headers = array())
    {
        $this->http_info = array();
        $ci = curl_init();
        /* Curl settings */
        curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
        curl_setopt($ci, CURLOPT_USERAGENT, $this->useragent);
        curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, $this->connecttimeout);
        curl_setopt($ci, CURLOPT_TIMEOUT, $this->timeout);
        curl_setopt($ci, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($ci, CURLOPT_ENCODING, "");
        curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, $this->ssl_verifypeer);
        if (version_compare(phpversion(), '5.4.0', '<')) {
            curl_setopt($ci, CURLOPT_SSL_VERIFYHOST, 1);
        } else {
            curl_setopt($ci, CURLOPT_SSL_VERIFYHOST, 2);
        }
        curl_setopt($ci, CURLOPT_HEADERFUNCTION, array($this, 'getHeader'));
        curl_setopt($ci, CURLOPT_HEADER, FALSE);
        switch ($method) {
            case 'POST':
                curl_setopt($ci, CURLOPT_POST, TRUE);
                if (!empty($postfields)) {
                    curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
                    $this->postdata = $postfields;
                }
                break;
            case 'DELETE':
                curl_setopt($ci, CURLOPT_CUSTOMREQUEST, 'DELETE');
                if (!empty($postfields)) {
                    $url = "{$url}?{$postfields}";
                }
        }
        if (isset($this->access_token) && $this->access_token) {
            $headers[] = "Authorization: OAuth2 " . $this->access_token;
        }
        if (!empty($this->remote_ip)) {
            if (defined('SAE_ACCESSKEY')) {
                $headers[] = "SaeRemoteIP: " . $this->remote_ip;
            } else {
                $headers[] = "API-RemoteIP: " . $this->remote_ip;
            }
        } else {
            if (!defined('SAE_ACCESSKEY')) {
                $headers[] = "API-RemoteIP: " . $_SERVER['REMOTE_ADDR'];
            }
        }
        curl_setopt($ci, CURLOPT_URL, $url);
        curl_setopt($ci, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ci, CURLINFO_HEADER_OUT, TRUE);
        $response = curl_exec($ci);
        $this->http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
        $this->http_info = array_merge($this->http_info, curl_getinfo($ci));
        $this->url = $url;
        if ($this->debug) {
            echo "=====post data======\r\n";
            var_dump($postfields);
            echo "=====headers======\r\n";
            print_r($headers);
            echo '=====request info=====' . "\r\n";
            print_r(curl_getinfo($ci));
            echo '=====response=====' . "\r\n";
            print_r($response);
        }
        curl_close($ci);
        return $response;
    }