java软件工程师学php -14. 面向对象
java程序员学php -14. 面向对象
相同点：
1.也是类+方法
2.也不允许多重继承
3.也有interface，可以利用interface实现多重继承
4.也有抽象类
5.也有静态方法
6.也可以通过final关键字禁止扩展
不同点：
1.class本身没有access modifier
2.属性和方法的默认的access modifier是public, 没有包可见性的概念，其它一样
3.不用为每个属性写getter和setter，有一套通用的__get()和__set()即可
4.允许类级别的常量，但不允许静态变量
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