作业1
这里定义了一个抽象类Animal
<?php
abstract class Animal{
public abstract function roar() ;
public function speak( $what )
{
echo $what."<br/>" ;
}
}
接下来是三个类的定义
<?php
require_once "Animal.php" ;
class Pig extends Animal
{
public function roar()
{
$this->speak("I'm a pig!") ;
}
}
class Monkey extends Animal
{
public function roar()
{
$this->speak("I'm a monkey!") ;
}
}
class Dog extends Animal
{
public function roar()
{
$this->speak("I'm a dog!") ;
}
}
接下来定义一个测试函数，并进行测试。
<? php
function test()
{
$myDog = new Dog() ;
$myMonkey = new Monkey() ;
$myPig = new Pig() ;
$myDog ->roar() ;
$myMonkey ->roar() ;
$myPig ->roar() ;
}
test() ;
测试结果为：
I'm a dog!
I'm a monkey!
I'm a pig!
作业2
先定义两个接口
<?php
interface iTalkable
{
public function talk() ;
}
interface iPlayable
{
public function play() ;
}
再在抽象类People中实现接口中的方法：
<?php
require_once "InterfaceContainer.php" ;
abstract class People implements iTalkable,iPlayable
{
public function play()
{
echo "I'm playing!"."<br/>" ;
}
public function talk( )
{
echo "I'm talking!"."<br/>" ;
}
}
最后由Teacher类继承People类，并在其中进行测试
<?php
require_once "People.php" ;
class Teacher extends People
{
public function Teachertalk( $what )
{
echo $what."<br/>" ;
}
// ……
}
$myTeacher = new Teacher() ;
$myTeacher->play() ;
$myTeacher->Teachertalk("I'm the father of Kai.Z!" ) ;
$myTeacher->talk() ;
结果为：
I'm playing!
I'm the father of Kai.Z!
I'm talking!
