function get_access_token($appkey, $appsecret, $callback, $code) { $url = 'https://graph.renren.com/oauth/token'; $params = array('client_id' => $appkey, 'client_secret' => $appsecret, 'redirect_uri' => $callback, 'code' => $code, 'grant_type' => 'authorization_code'); $rrObj = new RenRenClient(); $rrObj->init($appkey, $appsecret); $result = $rrObj->_POST($url, $params); if (!empty($result->access_token)) { return $result->access_token; } else { //出错处理 return $result; } }