ThinkPHP is an open source PHP framework that was born to simplify enterprise application development and agile WEB application development. It was first born in early 2006, formerly known as FCS. It was officially renamed ThinkPHP on New Year's Day 2007, and was released under the Apache2 open source agreement. The early ideological architecture originated from Struts. Later, after continuous improvement and improvement, it also learned from many excellent foreign frameworks and models, using object-oriented development structure and MVC model, integrating Struts' Action and DAO ideas and JSP's TagLib ( tag library), RoR's ORM mapping and ActiveRecord mode, which encapsulates CURD and some common operations, single entry mode, etc., and has unique performance in template engine, caching mechanism, authentication mechanism and scalability.