What is Yii =========== Yii is a high-performance, component-based PHP framework for developing large-scale Web applications rapidly. It enables maximum reusability in Web programming and can significantly accelerate your Web application development process. The name Yii (pronounced `Yee` or `[ji:]`) is an acronym for "**Yes It Is!**". Requirements ------------ To run a Yii-powered Web application, you need a Web server that supports PHP 5.3.?. For developers who want to use Yii, understanding object-oriented programming (OOP) is very helpful, because Yii is a pure OOP framework. What is Yii Best for? --------------------- Yii is a generic Web programming framework that can be used for developing virtually any type of Web application. Because it is light-weight and equipped with sophisticated caching mechanisms, it is especially suited to high-traffic applications, such as portals, forums, content management systems (CMS), e-commerce systems, etc. How does Yii Compare with Other Frameworks? ------------------------------------------- Like most PHP frameworks, Yii is an MVC (Model-View-Controller) framework. TBD