Yii Framework is a fast, secure, and efficient PHP framework. Yii Framework is flexible yet pragmatic, it works right out of the box, and it has reasonable defaults.
Yii Framework gives you the maximum functionality by adding the least possible overhead. Yii Framework also has sane defaults and built-in tools helps you write solid and secure code, and Yii Framework helps you write more code in less time with simple, yet powerful APIs and code generation.
You can learn more about the Yii Framework on the project website.