public function __construct() { parent::__construct(); $cur = $this->userauth->current(TRUE); if (empty($cur)) { $this->_return_json(array('status' => C('status.auth.login_timeout'), 'msg' => '登录超时,请重新登录')); } else { self::$user_info = $cur; } $this->load->library(array('form_validation')); }