復制代碼 代碼如下:

<?php
error_reporting(E_ALL);
class stu{
private $a;
private $b = 0;
public $c;
public $d = 0;
//這里的 private 可以用 protected public 替代
private function __get($name) {
return 123;
}

//這里的 private 也可以用 protected public 替代
private function __set($name, $value) {
echo "This 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
?>