{Function}

Yii::import();

{Code}

Yii::import('application.controllers.yiilibController');

{Route in Yii}

format like this : application.models.*

{Boy Say}

application = <path> protected/

application.controllers = <path> protected/controllers/

application.controllers.yiilibController = <path> protected/controllers/yiilibController.php

 一个路由机制找到文件，导入，就可以使用了。在Yii中先导入，后使用。