工厂方法模式(Factory Method Pattern)

<?php
//工厂方法模式
//各个实际工厂需要继承的接口
class apple {
public function eat() {
echo '苹果被吃了';
}
}
class applefarm implements abstractfarm {
public function realcreate() {
return new apple();
}
}
class orange {
public function eat() {
echo '橘子被咬了';
}
}

//具体农场
interface abstractfarm {
function realcreate();
}
class orangefarm implements abstractfarm {
public function realcreate() {
return new orange();
}
}

//调度中心
class centorfarm {
function create($fruit) {
$creatorclassname = $fruit.'farm';
$creator = new $creatorclassname();
return $creator->realcreate();
}
}
$farm = new centorfarm();
$farm->create('apple')->eat();
$farm->create('orange')->eat();
?>