Yii框架Session与Cookie使用方法示例

public function actionIndex(){    $session = /YII::$app->session;    //判断session是否开启    if(!$session->isActive) {      //未开启,需要开启      $session->open();    }    //设置session    $session->set('user_name','zhangsan');    //获取session    $user_name = $session->get('user_name');    echo $user_name;    //删除session    $session->remove('user_name');    //数组形式的session    //设置session    $session['userName'] = 'lisi';    //获取session    $user_name = $session['userName'];    echo $user_name;    //删除session    unset($session['userName']);}

public function actionIndex(){    //设置cookie(注意这里用的是响应组件)    $cookies = /YII::$app->response->cookies;    $cookie_data = array('name'=>'user','value'=>'zhangsan');    $cookies->add(new Cookie($cookie_data));    //获取cookie(注意这里用的是请求组件)    $cookie = /YII::$app->request->cookies;    echo $cookie->getValue('user','default_value');//第二个参数为不存在时的默认值    //删除cookie(注意这里用的是响应组件)    $cookies->remove('user');}