How to call non-static method from static method in php

How to call non-static methods from static methods in php: First, you need to instantiate the object; then call the non-static methods in the object. How to call a static method from a non-static method: You can use the self keyword or the form [class name::method name] to call it.

Static methods call non-static methods: In static methods in a class, you need to instantiate the object and then call the method in the class.

Non-static methods call static methods: they can be called in the form of self or the class name plus::.

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Example:

<?php
class A {
	public function noneStaticFun() {
		echo  __CLASS__." none static function<br/>";
	}
	public static function staticFun() {
		echo __CLASS__." static function<br/>";
		//静态方法调用非静态方法，需要实例化对象然后再调用对象中的非静态方法
		(new A())->noneStaticFun();
	}
	public function testCallStaticFun() {
		echo "call static function<br/>";
		//调用本类的静态方法，使用 self关键字或者类名
		self::staticFun();
		//A::staticFun(); //也可以使用这种方式
		//调用其它类的静态方法，直接使用类名::方法名的形式调用
		B::myStaticFun();
	}
}
class B {
	public static function myStaticFun() {
		echo __CLASS__." static function<br/>";
	}
}
//演示
$testA = new A();
$testA->testCallStaticFun();
A::staticFun();

Running result:

call static function
A static function
A none static function
B static function
A static function
A none static function

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