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php-mvc模式（2）

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Jun 23, 2016 pm 01:37 PM

mvc模式就是为了更好的统一管理，从最外面实现对整个系统的操作。所以我们需要封装一个统一的入口文件，当我们需要它运作的时候只需要以URL的get形式传入指令到这个入口文件，它就能自动调集各种模块功能，完成我们指派的任务。
先建立一个function.php在里面定义系统所有调用的方法：

在这里封装了一个函数C来Contorller.class，传入$name然后定义方法去创建这个对象，传入方法$method去让相应的对象实现这个方法。

.而在底层的方法的封装中，只是传入了类名$name，没有直接地控制，只是以控制类的形式控制状态。即是说，只有实例化了指定的类，这个类才能被激活，才能实现自己的方法，也是一种间接地控制了。我们相应地也应该在conroller.class.php里面修改一下：

这里不再自己去new一个类，而是调用已经定义好的方法M V去实现类实例化.

Mvc等级自上而下，上层不用知道最下面的类有什么属性，用什么方法去实现。只要知道那个对象有这个需要的方法，就让这个对象去解决问题(实例化这个对象)。怎么解决问题？那是底层的事情，底层会定义解决的方法。

涵盖整个系统的方法已经封装好了，接下来应该在建一个统一的入口，index.php

我们只需要从外面访问index.php，地址栏上带上类名和方法，就可以得到想要的结果了~

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