工作几个月了用框架开发过网站,也用混编写过程序,但是对于面向对象我一直很吃力,总感觉无从下手,于是开始在网上找一些基础的面向对象的视频来学习.昨天我在网上找到了一个关于会员注册登陆的用面向对象来实现的一个简短的视频,老师讲的很快,总共不到一个小时的视频,听得我也是云里雾里的,所以又听了一遍,顺便写下这个博客,希望和我一样的新手可以逐渐的理解面向对象,当然大家页可以直接去51cto直接看原装的视频.
首先上图:这是我自己画的一个图,主要用来将页面与类的逻辑关系分清楚,也帮助大家理解.
demo文件我已经上传大家可以下载下来看看.下面我写一下我自己认为非常不好理解的地方:
1.首先是逻辑结构,每个文件是作什么用的,以及各个文件之间如何关联.这个位置我到现在也不是很懂,可能刚接触的时候解释这个样子.这个应该与经验有很大的关系.
2.在index.php中有个__autoload函数用来载入类文件,如果只有一个类文件这个是很好理解的,但是如果想这个例子一样有五个类文件(当然一般的项目里可能要比这多得多了).
3.这点就是User这个抽象类定义了Reg类和Login类的方法.在Main类中有一方法通过传入不同的类的对象实现了一个简单的多态.
其余所有的东西我都在demo文件内部有详细的注释(由于是测试文件并没有链接数据库,而是直接使用的xml文件数据库进行的测试).
这个例子对我这样的初学者来说很不错,能渐渐的帮我找到面向对象编程的思路.如果大家有比较好的面向对象的小案例,希望能给我留个评论.共同学习.

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