#### session组件 ``` $session = \Yii::$app->session; $session->isActiv); //判断session是否开启 $session->open() //开启session $session->set('name','jack'); //设置session ## $session->get('name'); //获取session $session->remove('name'); //删除session ``` #### cookie组件 ``` $cookie = \Yii::$app->response->cookies; //获取cookie组件 $cookie_data = ['name'=>'name','value'=>'jack']; //设置cookie,name和value是固定写法 $cookie->add(new Cookie($cookie_data)); //设置 $cookie_data = ['name'=>'name','value'=>'milan']; //修改 $cookie->add(new Cookie($cookie_data)); //修改 $cookie->remove('name') //删除cookie $cookies = \Yii::$app->request->cookies; //获取请求cookie组件 $cookies->getValue('name','0'); //获取cookie的值,不存在就默认值0 ```