复制代码 代码如下:

<?php

/**

* 原型模式

*

* 用原型实例指定创建对象的种类.并且通过拷贝这个原型来创建新的对象

*

*/

abstract class Prototype

{

private $_id = null;

public function __construct($id)

{

$this->_id = $id;

}

public function getID()

{

return $this->_id;

}

public function __clone() // magic function

{

$this->_id += 1;

}

public function getClone()

{

return clone $this;

}

}

class ConcretePrototype extends Prototype

{

}

//

$objPrototype = new ConcretePrototype(0);

$objPrototype1 = clone $objPrototype;

echo $objPrototype1->getID()."<br/>";

$objPrototype2 = $objPrototype;

echo $objPrototype2->getID()."<br/>";

$objPrototype3 = $objPrototype->getClone();

echo $objPrototype3->getID()."<br/>";