时间:2021-07-01 10:21:17 帮助过:15人阅读
<?php abstract class mobile{ abstract public function getInfo(); abstract public function getPrice(); } class iphone extends mobile{ private $price=4999; private $info='官方标配(手机+电源+数据线+耳机)'; public function getInfo(){ return $this->info; } public function getPrice(){ return $this->price; } } class bareIphone extends iphone{ private $info='裸机(手机)'; public function getInfo(){ return $this->info; } public function getPrice(){ return parent::getPrice()-200; } } class fullSetIphone extends iphone{ private $info='套装(手机+电源+数据线+耳机+手机壳+贴膜+移动电源)'; public function getInfo(){ return $this->info; } public function getPrice(){ return parent::getPrice()+100; } } class lumia920 extends mobile{ private $price=4399; private $info='官方标配(手机+电源+数据线+耳机)'; public function getInfo(){ return $this->info; } public function getPrice(){ return $this->price; } } class bareLumia920 extends lumia920{ private $info='裸机(手机)'; public function getInfo(){ return $this->info; } public function getPrice(){ return parent::getPrice()-200; } } class fullSetLumia920 extends lumia920{ private $info='套装(手机+电源+数据线+耳机+手机壳+贴膜+移动电源)'; public function getInfo(){ return $this->info; } public function getPrice(){ return parent::getPrice()+100; } } $iphone=new fullSetIphone(); echo 'iphone全套配置价格为:'.$iphone->getPrice().',配置为:'.$iphone->getInfo(); echo '<br>'; $lumia920=new bareLumia920(); echo 'lumia920全套配置价格为:'.$lumia920->getPrice().',配置为:'.$lumia920->getInfo(); ?>
我们为iphone和lumia920分别设置了三种套餐,但观察一下可以发现,iphone和lumia920的bare方法和fullSet方法完全一样的,这造成了一种耦合,我们完全可以将bare方法和fullSet方法分离出来,这就需要装饰模式,代码如下:
<?php abstract class mobile{ abstract public function getInfo(); abstract public function getPrice(); } class iphone extends mobile{ private $price=4999; private $info='官方标配(手机+电源+数据线+耳机)'; public function getInfo(){ return $this->info; } public function getPrice(){ return $this->price; } } class lumia920 extends mobile{ private $price=4399; private $info='官方标配(手机+电源+数据线+耳机)'; public function getInfo(){ return $this->info; } public function getPrice(){ return $this->price; } } //装饰类 abstract class decorateIphone extends mobile{ protected $iphone; public function __construct(mobile $iphone){ $this->iphone=$iphone; } } class bare extends decorateIphone{ private $info='裸机(手机)'; public function getInfo(){ return $this->info; } public function getPrice(){ return $this->iphone->getPrice()-200; } } class fullSet extends decorateIphone{ private $info='套装(手机+电源+数据线+耳机+手机壳+贴膜+移动电源)'; public function getInfo(){ return $this->info; } public function getPrice(){ return $this->iphone->getPrice()+100; } } $iphone=new fullSet(new iphone()); echo 'iphone全套配置价格为:'.$iphone->getPrice().',配置为:'.$iphone->getInfo(); echo '<br>'; $lumia920=new bare(new lumia920()); echo 'lumia920裸机价格为:'.$lumia920->getPrice().',配置为:'.$lumia920->getInfo(); ?>
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