//新浪微博SDK的http請求部分源碼
 /**
     * Make an HTTP request
     *
     * @return string API results
     * @ignore
     */
    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;
    }

<?php
class API {
    /**
     * the doc info will be generated automatically into service info page.
     * @params
     * @return
     */
    public function api($parameter, $option = "foo") {
    }

    protected function client_can_not_see() {
    }
}

$service = new Yar_Server(new API());
$service->handle();
?>

<?php
$client = new Yar_Client("http://host/api/");
$result = $client->api("parameter);
?>