PHP object-oriented programming

What is an object

An object is a thing, an entity

What is a class

A class is an abstract, conceptual type of thing -

A class is a template of an object, and an object is a class Instance

What is in the object

Member attributes - variables - used to describe the appearance and shape of the object

Member methods - functions - used to define the functionality of the object

Oriented The difference between object-oriented and process-oriented

The smallest unit of process-oriented is a function; the smallest unit of object-oriented is an object

Three major characteristics of objects

Encapsulation, inheritance, polymorphism

Object and arrays are composite types of PHP. Objects are more powerful. They can not only store multiple data, but also store functions in objects. It is not the object-oriented syntax that is difficult, but how to design an object-oriented program. This is You need to practice more and become more proficient in subsequent studies

The above has introduced PHP object-oriented programming, including aspects of it. I hope it will be helpful to friends who are interested in PHP tutorials.