How to implement classes in php

The method for php to implement a class is: [class class name { }], such as [

Implementing classes and objects in PHP

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1. Create a class

Syntax:

class 类名{
	//属性
	//方法
	//常量
}
类是由属性、方法、常量组成的，也可以说
类成员有：属性、方法、常量

Naming rules for class names:

starts with letters and underscores, followed by letters, numbers, and underscores

Cannot use PHP keywords as class names

Class names are not case-sensitive (variable names are case-sensitive, keywords and class names are not case-sensitive)

Use Pascal nomenclature for class names (The first letter of a word in camel case is capitalized)

<?php
class Student {
}

2. Object instantiation

Instantiate an object through the new keyword.

<?php
//定义类
class Student {
	
}
//实例化对象
$stu1=new Student();
$stu2=new Student;		//小括号可以省略
var_dump($stu1,$stu2);	//object(Student)#1 (0) { } object(Student)#2 (0) { }

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