CI(5) session管理

首先 配置 密钥 

<?phpclass sess extends CI_Controller{public function __construct(){parent::__construct();$this->load->library('session');}public function index(){if($this->session->userdata('login')){echo '已经登陆';}else{echo '尚未登陆';}}public function login(){$this->session->set_userdata(array('login'=>'蜘蛛侠'));}public function loginout(){$this->session->unset_userdata('login');}}?>