php抽象多态的应用

日期：2020-10-26 04:24:14 浏览：216

<?php
//多态
//接口中定义的方法必须全部实现
interface USB{
    function load();
    function using();
    function uninstall();
}
class Keyboard implements USB{
    public function load()
    {
        // TODO: Implement cd() method.
        echo "键盘加载<br>";
    }
    public function using()
    {
        // TODO: Implement using() method.
        echo "键盘使用中<br>";
    }
    public function uninstall()
    {
        // TODO: Implement uninstall() method.
        echo  "键盘卸载中<br>";
    }
}
class mouse implements USB{
    public function load()
    {
        // TODO: Implement cd() method.
        echo "鼠标加载<br>";
    }
    public function using()
    {
        // TODO: Implement using() method.
        echo "鼠标使用中<br>";
    }
    public function uninstall()
    {
        // TODO: Implement uninstall() method.
        echo  "鼠标卸载中<br>";
    }
}
class Computer{
    function load(USB $usb){
        $usb->load();
        $usb->using();
        $usb->uninstall();
    }
}
//$a=new Keyup();
//$a->load();
$b=new Computer();
$b->load(new Keyboard());
echo "<hr/>";
$c=new Computer();
$c->load(new mouse());