Yii是一个高性能的PHP5的web应用程序开发框架。通过一个简单的命令行工具yiic可以快速创建一个web应用程序的代码框架，开发者可以在生成的代码框架基础上添加业务逻辑，以快速完成应用程序的开发。-Yii is a high-performance web application development fr a mework for PHP5. Through a simple command-line tool yiic can quickly create a web application fr a mework code, developers can add business logic in code generated on the basis of the fr a mework to quickly complete the development of the application.