<"htmlcode">

<"external nofollow" href="http://yii.test/index.php">http://yii.test/index.php"htmlcode">

This is a logging for test\beforeAction.
This is a testing for system/test.
This is a logging for test\afterAction.


请求 http://yii.test/index.php"htmlcode">

This is a testing for system/test-one.


请求 http://yii.test/index.php"htmlcode">

This is a testing for system/test-two.


总结
Yii 中的 ActionFilter（过滤器）相当于 Laravel 中的 Middleware（中间件），beforeAction 相当于前置中间件，afterAction 相当于后置中间件。