PHP learning notes-Object-oriented design

Object-oriented design is a very important part in php program development. if you want to become a senior php programmer, we must know the specific usage and maintenance of object-oriented design. simple modularization

Object-oriented design is a very important part in php program development. if you want to become a senior php programmer, we must know the specific usage and writing of object-oriented design.

Easy to maintainModularity is a feature of object-oriented programming. objects are represented as classes with the same functions in the same namespace. we can add a class in the namespace without affecting other members of the namespace.

ScalabilityObject-oriented programming supports expansion in essence. if a class has a certain function, it can be quickly expanded to create a class with extended functions.

Code reuseBecause the function is encapsulated in the class and the class exists as an independent entity, it is very easy to provide a class library.

It is suitable for many people to work together to develop projects, so many large and medium-sized websites now choose to use OOP for development. this article mainly explains the most basic methods and code instances for object-oriented programming using php, how to create a class and how to generate a class instance, etc. it is just an entry-level and very simple, it is far from enough. only suitable for beginners of php

Public indicates global and can be accessed by external subclass inside the class;

The instance code is as follows: