After following, you can keep track of his dynamic information in a timely manner
Courses in the relevant section：interface
interface 定义接口
2018-04-290个赞
Courses in the relevant section：The role of final keyword
final放到类前面 就不允许被继承， 放到方法前面就不允许被重写。final
2018-04-290个赞
Courses in the relevant section：Magic method__get
__get（$name）是魔术方法 当访问的属性是空或者是私有的 会自动获取属性
2018-04-290个赞
Courses in the relevant section：Magic method__toString
__toString 当你尝试直接输出对象时会自动调用
2018-04-291个赞
