47. PHP 魔术方法

class A
{
public $name;
}

$aa = new A();
$aa->name = 'wjh' . '<br/>';
echo $aa->name;

$bb = clone $aa;
$bb->name = 'wang lu xi';  //不改变赋值对象的属性
echo $bb->name . '<br/>';
echo $aa->name . '<br/>';

<?php

class A
{
public $name;

public function __clone()  // 魔术方法，只要clone就运行这个方法
{
$this->name = ' wei jian hua';
}
}

$aa = new A();
$aa->name = 'wjh' . '<br/>';
echo $aa->name;

$bb = clone $aa;

echo $bb->name;