I have seen a couple of articles about how to integrate external libraries to debug our PHP code (i.e. firePHP) but after you read this article you will realize that there is no need for such libraries when using Yii.
This article explains issues about installing XAMPP server package (Lite version) on Windows OS and configuring it for serving webapps written in Yii. Please note, that XAMPP is available for many more platforms and systems. I write about Windows edition as it was the only one tested by me.
The purpose of this post is to let anyone quickly find how to accomplish a configuration task, and list here all the posibilities of the config.php file and also link to pages that explain how is each thing implemented.