> 為了方便使用服務類，特地新增了常用的助手函數，具體使用請看下面： ```php /** * 獲取配置項 * @param string $key 配置鍵名,支持'user.name'形式的讀取方式 * @param mixed $default 配置不存在時的默認值,默認為null * @return mixed 成功返回配置值,配置不存在返回默認值 */ function config($key, $default = null) { return \Lying::config($key, $default); } /** * 返回Maker實例 * @return \lying\service\Maker */ function maker() { return \Lying::$maker; } /** * 返回Request實例 * @return \lying\service\Request */ function request() { return \Lying::$maker->request; } /** * 返回Response實例 * @return \lying\service\Response */ function response() { return \Lying::$maker->response; } /** * 返回Router實例 * @return \lying\service\Router */ function router() { return \Lying::$maker->router; } /** * 返回Helper實例 * @return \lying\service\Helper */ function helper() { return \Lying::$maker->helper; } /** * 返回Session實例 * @return \lying\service\Session */ function session() { return \Lying::$maker->session; } /** * 返回Cookie實例 * @return \lying\service\Cookie */ function cookie() { return \Lying::$maker->cookie; } /** * 返回Hook實例 * @return \lying\service\Hook */ function hook() { return \Lying::$maker->hook; } /** * 返回Encrypter實例 * @return \lying\service\Encrypter */ function encrypter() { return \Lying::$maker->encrypter; } /** * 返回Dispatch實例 * @return \lying\service\Dispatch */ function dispatch() { return \Lying::$maker->dispatch; } /** * 返回View實例 * @return \lying\view\View */ function view() { return \Lying::$maker->view; } /** * 返回Redis實例 * @param string $id 實例ID * @return \lying\service\Redis */ function redis($id = 'redis') { return \Lying::$maker->redis($id); } /** * 返回Cache實例 * @param string $id 實例ID * @return \lying\cache\Cache */ function cache($id = 'cache') { return \Lying::$maker->cache($id); } /** * 返回Connection實例 * @param string $id 實例ID * @return \lying\db\Connection */ function db($id = 'db') { return \Lying::$maker->db($id); } /** * 返回Captcha實例 * @param string $id 實例ID * @return \lying\captcha\Captcha */ function captcha($id = 'captcha') { return \Lying::$maker->captcha($id); } ```