PHP设计模式
面向对象的目标
- 高内聚，低耦合
面向对象设计的基本原则
- 单一职责：一个类只做一件事
- 开闭原则：对扩展开放对修改关闭
- 里氏替换：子类必须能替换所有父类的使用
- 依赖倒置：设计依赖于抽象而不是实现
- 最少知识：对象应当尽可能少的去了解其他对象
- 接口隔离：接口倾向于小而多
- 组合优先：优先使用类的组合而不是继承
抽象类和接口的使用
- 当类中有共同的行为或属性时,可以考虑使用 abstract calss
- 当类别中有共同的操作界面,但是在实现上有所差别,可以考虑使用 interface
igo9go / phpDesignPattern
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PHP中常用的设计模式的一些小demo
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