这便是基于组件的，高性能的php开发框架，yii。是开发大型网站最好的选择。他几乎拥有了所有的特性，包括MVC, DAO/ActiveRecord, I18N/L10N, caching, jQuery-based AJAX support, 用户认证和基于角色的访问控制, 脚手架, 输入验证, 部件, 事件, 主题化以及Web services等. 用严格的OOP编码规则编写，Yii易于使用使用，非常灵活，具有很好的可扩展性

Yes, it is Yii -- a high-performance component-based PHP framework best for developing large-scale Web applications. Yii comes with a full stack of features, including MVC, DAO/ActiveRecord, I18N/L10N, caching, jQuery-based AJAX support, authentication and role-based access control, scaffolding, input validation, widgets, events, theming, Web services, and so on. Written in strict OOP, Yii is easy to use and is extremely flexible and extensible.