Abstract
Yii is a high-performance component-based PHP framework for developing large-scale Webapplications. It enables maximum reusability in Web programming and can signi?cantly accelerate the development process.

The name Yii (pronounced as Yee or [ji:] ) standsfor easy, efficient and extensible Yii is a generic Web programming framework that can be used for developing virtually all sorts of Web applications. Because it is light-weighted and equipped with sophisticated caching solutions, it is especially suitable for developing high-traffic applications, such as portals, forums, content management systems (CMS), e-commerce systems, etc

Like most PHP frameworks, Yii is an MVC framework. Yii excels over other PHP frameworks in that it is e ? cient, feature-rich and clearly-documented. Yii is carefully designed from the beginning to ?t for serious Web application development. It is neither a byproduct of some pro ject nor a conglomerate of third-partywork. It is the result of the authors' rich experience of Web application development and the investigation and re?ection of the most popular Web programming frameworks and applications.