ThinkPHP是为了简化企业级应用开发和敏捷WEB应用开发而诞生的。最早诞生于2006年初，2007年元旦正式更名为ThinkPHP，并且遵循Apache2开源协议发布。ThinkPHP从诞生以来一直秉承简洁实用的设计原则，在保持出色的性能和至简的代码的同时，也注重易用性。并且拥有众多原创功能和特性，在社区团队的积极参与下，在易用性、扩展性和性能方面不断优化和改进。
推荐课程：PHP教程。
ThinkPHP是一个快速、兼容而且简单的轻量级国产PHP开发框架，诞生于2006年初，原名FCS，2007年元旦正式更名为ThinkPHP，遵循Apache2开源协议发布，从Struts结构移植过来并做了改进和完善，同时也借鉴了国外很多优秀的框架和模式，使用面向对象的开发结构和MVC模式，融合了Struts的思想和TagLib（标签库）、RoR的ORM映射和ActiveRecord模式。
ThinkPHP可以支持windows/Unix/Linux等服务器环境，正式版需要PHP5.0以上版本支持，支持MySql、PgSQL、Sqlite多种数据库以及PDO扩展，ThinkPHP框架本身没有什么特别模块要求，具体的应用系统运行环境要求视开发所涉及的模块。
作为一个整体开发解决方案，ThinkPHP能够解决应用开发中的大多数需要，因为其自身包含了底层架构、兼容处理、基类库、数据库访问层、模板引擎、缓存机制、插件机制、角色认证、表单处理等常用的组件，并且对于跨版本、跨平台和跨数据库移植都比较方便。并且每个组件都是精心设计和完善的，应用开发过程仅仅需要关注您的业务逻辑。
重要的概念
要掌握ThinkPHP，首先要了解其中的几个重要概念，对于熟悉Java开发的朋友，应该很容易理解下面的一些概念。
Action对象
和Struts框架的Action类似，Action对象主要提供应用逻辑的控制和处理，属于ThinkPHP的控制层，由核心的App类完成模块和操作的解析后直接转交给相应的Action对象处理。应用类中的所有Action对象都继承系统的Action基类。
Dao对象
是指DataAccessObject（数据访问对象），Dao设计模式把底层的数据访问逻辑和业务逻辑分开，夹在业务层与数据层中间，用于数据库访问和操作。可以针对单表和多表操作。ThinkPHP中的Dao对象属于建立在抽象数据库访问层之上的事务性对象。
VO对象
是指ValueObject（数据对象），更加精确的说是业务对象，因为VO对象是存活在业务层的，供业务逻辑使用的。VO对象和数据表存在一种映射关系，VO对象的每个属性对应数据表（或者视图）的一个字段，你完全可以添加其他非数据表字段的VO对象属性，以用于业务逻辑操作，例如关联字段。VO对象有个特殊的保留属性_info，是一个数组变量，用来保存该VO对象的一些特殊信息。和VO对象对应的概念还有PO（持久数据对象），VO和PO的概念都来自于O/RMapping（ObjectRelationalMapping，对象关系映射），PO只能用在数据层（也就是说PO对象的属性必须和数据表一一对应），VO用在业务逻辑层和表示层（可以有自己的额外属性）。各层操作属于该层自己的数据对象，这样就可以降低各层之间的耦合，便于以后系统的维护和扩展。如果将PO用在各个层中就相当于我们使用全局变量，我们知道在OO设计非常不赞成使用全局变量。
VoList对象
在ThinkPHP框架中，把查询后的数据集（ResultSet）转换成数据列表对象，也就是VOLIST对象，和ResultSet对象不同的是每个记录就相当于一个VO对象。在VOLIST对象中可以方便地遍历和操作VO对象。VO对象和VOLIST对象都属于ThinkPHP框架中的实体对象，是数据操作的基本元素。如果你在开发过程中没有使用Dao模式，而是通过数据库驱动类直接操作数据库，那么返回的是ResultSet对象。ThinkPHP系统提供了从ResultSet对象转换为VOLIST对象的方法。
组件和插件支持
基于角色的权限控制体系
企业级的应用是离不开安全保护的，ThinkPHP以基于Spring的Acegi安全系统作为参考原型，并做了简化，以适合目前的ThinkPHP结构，提供了一个多层的、可定制的安全体系来为应用开发提供安全控制。安全体系中主要有： 安全拦截器、认证管理器、决策访问管理器 、运行身份管理器。
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