实例
<?php
/*
* 皇帝类
*/
class Emperor {
private $wife = '皇后';
private $money = 10000000;
public function showWife() {
echo $this->wife;
}
public function __get($name) {
return $this-$name;
}
public function getMoney() {
return $this->money;
}
}
/*
* 太子类
*/
class Prince extends Emperor {
private $wife = '太子妃';
protected $money = 1000; // 自已的钱
public function showWife() {
return $this->wife;
}
public function showMoney() {
return $this->money ;
}
}
$p = new Prince();
//echo $p->wife;
// Notice: Undefined property: Prince::$wife 太子不能继承老子的老婆
echo '<hr>';
echo '太子只能使用' . $p->showWife(); // 只能使用自已的太子妃
echo '<hr>';
echo '太子自已的财产' . $p->showMoney() . '元';
echo '<hr>';
echo '太子可以继承老子的财产' . $p->getMoney() . '元';运行实例 »
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