如何写好一个PHP的类?
嗯,这是一个听起来很容易,但是实际操作起来并不容易的问题。前几天和一家公司的技术负责人聊PHP面向对象在公司内的应用,他的意思是:现在很少有PHPer懂面向对象。理由很简单,没有任何一个强制性的理由使你必须使用对象化的PHP。不仅如此,你要明白一件事,面向对象的门槛,不低,但PHP的门槛,很低。
我承认他说的没错,就我这几年的经验来看,很多人只了解到PHP class的基本语法,但是一些核心的思想,如:类的创建原则、设计模式等,这些理论知识的运用没有一定时间的经验是没法真正明白的。我们的困扰主要在以下几个地方:
1. 为什么要用
2. 门槛很高,如何坚持下来
3. 使用场景
4. 有什么好处,我可以使用过程的方法完成的事情,为什么非要使用对象的方法
很遗憾,每一本将面向对象的书都有答案。可是,我们真的能明白么?
刚好,我们在做课程类的产品,因此,我也计划通过实践的方式给出一门主要讲解在PHP环境下如何使用面向对象的课程。我期望这门课程可以非常容易上手,因此我也把它写得非常简单:
1. 介绍使用的环境
2. 每次通过实例讲解一个小的知识点
3. 所有的源码发布到github分享
4. 类库可以被直接使用,且定期更新
这是一个设想,当然也需要真正的实施。

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