面向对象的写码

<?php

/**
*鸟能在空中飞；飞机也能在空中飞；超人也能在空中飞；
*空警能管理和控制飞机的飞行线路，当然也能管理超人的飞行线路，但是对于鸟是无法管理的
*/

abstract class DongWu{

protected $mingZi;
protected $diDian;

public function __construct($mingZi, $diDian){
$this->diDian = $diDian;
$this->mingZi = $mingZi;
}

public function zhuoHaiChong(){
echo $this->mingZi.$this->diDian.'捕捉害虫';
}

}
interface Fly{
public function fly();
}
class QingWa extends DongWu{
// public function zhuoHaiChong(){
// echo $this->mingZi.$this->diDian.'捕捉害虫';
// }
}
class QingTing extends DongWu implements Fly {
public function fly(){
return $this->mingZi.'能飞，';
}
public function zhuoHaiChong(){
echo $this->fly();
parent::zhuoHaiChong();

}
}
class ZhuoMuNiao extends DongWu implements Fly{
public function fly(){
return $this->mingZi.'能飞，';
}
public function zhuoHaiChong(){
echo $this->fly();
parent::zhuoHaiChong();
}
}

$qw = new QingWa('青蛙', '在田间');
$qw->zhuoHaiChong();
echo '<br><br>';
$qt = new QingTing('蜻蜓', '在空中');
$qt->zhuoHaiChong();
echo '<br><br>';
$zmn = new QingTing('啄木鸟', '在树上');
$zmn->zhuoHaiChong();