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');
}