Like most PHP frameworks, Yii is an MVC framework.
Yii excels other PHP frameworks at being efficient, feature-rich and clearly-documented. Yii is carefully designed from the ground up to be fit for serious Web application development. It is neither a byproduct of some project nor a conglomerate of third-party work. It is the result of the authors' rich experience with Web application development and their investigation of the most popular Web programming frameworks and applications.
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