PHP magic method __set __get method

First take a look at the explanation of the official document
__set() is run when writing data to inaccessible properties.
__get() is utilized for reading data from inaccessible properties.
How to translate it in Chinese? inaccessible: n. Difficult to reach; difficult to approach; incomprehensible.
There is code and there is truth:

<?php

error_reporting(E_ALL);

class stu{

private $a;

​​​​private​$b​= 0;

public $c;

0;

//Here private can be replaced by protected public

private

function

__get($name) {                                                                                                             //Here private can also be replaced by protected public

private function __set(

$name, $value

) {

                                                                                                  is set function";

​​​}}$s​= new stu();

var_dump($s->a); //output: 123

var_dump($s

->b); //output: 123

var_dump($s->c); //output: null

var_dump($s->d); //output: 0

var_dump($s->e); //output: 123

$s->a = 3; //output: This is set function

$s->c = 3; //no output$s

->f = 3; //output: This is set function?> There will be a fatal errorIf there is no __get method, there will be a notice when executing var_dump($s->e), prompting that the attribute $e is not definedSummary:

1. When reading data from an inaccessible attribute The __get() method is called

2. The __set() method is called when assigning a value to an inaccessible property3. Inaccessible properties include: (1) private properties, (2) uninitialized properties4. __isset () __unset() is also similar The above introduces the PHP magic method __set __get method, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.