规则：guest
类名：frontend\rbac\rules\Guest

类：frontend\rbac\rules\Guest

<?php
/**
 * Created by koko
 * Email: kokostudio@qq.com
 * Date: 2015/5/18
 * Time: 11:47
 */

namespace frontend\rbac\rules;

use yii\rbac\Rule;

/*
 *  用户访问规则：已登录用户 user
 *  已登录用户返回真
 *  未登录返回假
 *
 * */

class User extends Rule
{
    public function execute($user,$item,$params)
    {

/*        print 'user';
        var_dump($user);
        print 'item';
        var_dump($item);
        print 'params';
        var_dump($params);
        exit;*/

        if(!\yii::$app->user->isGuest){
            return true;
        }
        return false;
    }


}

http://www.yiichina.com/tutorial/571