define parent function

Learn more about parent class references pointing to child classes, and learn more about references pointing The parent class application points to a subclass object and refers: The parent class Animal, subclass Cat, Dog. Here, Animal can be an

In PHP, subclass overload the parent class method [parent: method name], neutron parent. In PHP, subclass overload the parent class method [parent: method name]. neutron parent cannot define a function with the same name in PHP, or include a method

PHP Neutron class overloads the parent class method "Parent:: Method Name", Neutron parent You cannot define a function in PHP that has the same name, or a method that cannot be defined in the same class, so there is no method overload. A method

Php implements parent to call the constructor and overwriting methods of the parent class. Php implements the constructor and overwriting methods for parent to call the parent class. This article mainly introduces the constructor and overwriting

Php implements parent to call the constructor and overwriting methods of the parent class. parent is overwritten. Php implements parent to call the constructor and overwriting methods of the parent class. parent is covered in this article. this

Knowledge: No matter whether there are any virtual functions in the parent class, you can define the parent class pointer to the subclass instance. If no virtual function exists in the parent class, the parent class pointer is used to access only

The method "parent: method name" for the subclass to overload the parent class is transferred to ncong PHP learning tutorial-ZJH_BLOGS cannot define a function with the same name in PHP, this also includes methods that cannot be defined in the same

This article mainly introduces the constructor and overwriting methods for php to implement parent to call the parent class. Based on the previous article about using class inheritance to solve code duplication problems, it further analyzes the

In PHP, duplicate functions cannot be defined, or methods that cannot be defined in the same class, so there is no method overload. A method with the same name as the parent class can be defined in the subclass. Because the parent class method

Example:public class Parentchildtest {public static void Main (string[] args) {Parent parent=new parent ();Parent.printvalue ();Child child=new Child ();Child.printvalue ();Parent=child;Parent.printvalue ();parent.myvalue++;Parent.printvalue