PHP Child Class Property Inheritance

Question

I have a base class called Parent . Within parent I am setting a class property, $this->admin = TRUE ;

I also have a child class we'll call Child . The constructor for Child calls the parent constructor. I was under the impression that when you set a class property int he parent class, that property is inherited by the child, unless you override it. yet when I test to see if $this->admin is set I get false. Did I get the concept of inheritance wrong?

Answer 1

不能使用$ this-> prop来访问类属性 ，而只能使用self :: $ prop来访问该属性，还应确保该属性未设置为private而是设置为public或protected以便将其继承给子类。