php设计模式 flyweight (享元模式)
25种php设计模式,你全都知道吗?下面用代码介绍享元模式(flyweight模式)
<?php /** * 享元模式 * * 运用享元技术有效的支持大量细粒度的对象 */ class CD { private $_title = null; private $_artist = null; public function setTitle($title) { $this->_title = $title; } public function getTitle() { return $this->_title; } public function setArtist($artist) { $this->_artist = $artist; } public function getArtist($artist) { return $this->_artist; } } class Artist { private $_name; public function __construct($name) { echo "construct " . $name . "<br/>"; $this->_name = $name; } public function getName() { return $this->_name; } } class ArtistFactory { private $_artists = array(); public function getArtist($name) { if (isset($this->_artists[$name])) { return $this->_artists[$name]; } else { $objArtist = new Artist($name); $this->_artists[$name] = $objArtist; return $objArtist; } } } $objArtistFactory = new ArtistFactory(); $objCD1 = new CD(); $objCD1->setTitle("title1"); $objCD1->setArtist($objArtistFactory->getArtist('artist1')); $objCD2 = new CD(); $objCD2->setTitle("title2"); $objCD2->setArtist($objArtistFactory->getArtist('artist2')); $objCD3 = new CD(); $objCD3->setTitle("title3"); $objCD3->setArtist($objArtistFactory->getArtist('artist1'));
其他相关设计模式:
http://www.phprm.com/develop/memento.html 备忘录模式(Memento模式)
http://www.phprm.com/develop/observer.html 观察者模式(Observer模式)
http://www.phprm.com/develop/template.html 模板方法模式(Template Method模式)
http://www.phprm.com/develop/command.html 命令模式(command模式)
http://www.phprm.com/develop/composite.html 组合模式(composite模式)
http://www.phprm.com/develop/flyweight.html 享元模式(flyweight模式)
http://www.phprm.com/develop/strategy.html 策略模式(strategy模式)
http://www.phprm.com/develop/state.html 状态模式(state模式)
http://www.phprm.com/develop/adapter.html 适配器模式(adapter模式)
http://www.phprm.com/develop/factory.html 工厂模式(factory模式)
http://www.phprm.com/develop/prototype.html 原型模式(prototype模式)
http://www.phprm.com/develop/facade.html 外观模式(facade模式)
http://www.phprm.com/develop/singleton.html 单例模式(singleton模式)
http://www.phprm.com/develop/bridge.html 桥梁模式(bridge模式)
http://www.phprm.com/develop/decorator.html 装饰模式(decorator模式)
http://www.phprm.com/develop/abstract.html 抽象工厂模式(abstract factory模式)
http://www.phprm.com/develop/builder.html 建造者模式(Builder模式)
http://www.phprm.com/develop/visitor.html 访问者模式(Visitor模式)
http://www.phprm.com/develop/interpreter.html 解释器模式(Interpreter模式)
http://www.phprm.com/develop/mediator.html 中介者模式(Mediator模式)
http://www.phprm.com/develop/chain.html 职责链模式(Chain Of Responsibility模式)
http://www.phprm.com/develop/proxy.html 代理模式(Proxy模式)
http://www.phprm.com/develop/interator.html 迭代器模式(Interator模式)
http://www.phprm.com/develop/dao.html 数据访问对象模式(DAO模式)
http://www.phprm.com/develop/delegation.html 委托模式(Delegation模式)
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