php设计模式 composite (组合模式)
25种php设计模式，你全都知道吗？下面用代码介绍组合模式(composite模式)
<?php
/**
* 组合模式
*
* 将对象组合成树形结构以表示"部分-整体"的层次结构,使得客户对单个对象和复合对象的使用具有一致性
*/
abstract class MenuComponent {
public function add($component) {
}
public function remove($component) {
}
public function getName() {
}
public function getUrl() {
}
public function display() {
}
}
class Menu extends MenuComponent {
private $_items = array();
private $_name = null;
public function __construct($name) {
$this->_name = $name;
}
public function add($component) {
$this->_items[] = $component;
}
public function remove($component) {
$key = array_search($component, $this->_items);
if ($key !== false) unset($this->_items[$key]);
}
public function display() {
echo "-- " . $this->_name . " ---------<br/>";
foreach ($this->_items as $item) {
$item->display();
}
}
}
class Item extends MenuComponent {
private $_name = null;
private $_url = null;
public function __construct($name, $url) {
$this->_name = $name;
$this->_url = $url;
}
public function display() {
echo $this->_name . "#" . $this->_url . "<br/>";
}
}
class Client {
private $_menu = null;
public function __construct($menu) {
$this->_menu = $menu;
}
public function setMenu($menu) {
$this->_menu = $menu;
}
public function displayMenu() {
$this->_menu->display();
}
}
// 实例一下
// 创建menu
$subMenu1 = new Menu("sub menu1");
$subMenu2 = new Menu("sub menu2");
$subMenu3 = new Menu("sub menu3");
$item1 = new Item("163", "www.163.com");
$item2 = new Item("sina", "www.sina.com");
$subMenu1->add($item1);
$subMenu1->add($item2);
$item3 = new Item("baidu", "www.baidu.com");
$item4 = new Item("google", "www.google.com");
$subMenu2->add($item3);
$subMenu2->add($item4);
$allMenu = new Menu("All Menu");
$allMenu->add($subMenu1);
$allMenu->add($subMenu2);
$allMenu->add($subMenu3);
$objClient = new Client($allMenu);
$objClient->displayMenu();
$objClient->setMenu($subMenu2);
$objClient->displayMenu();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)
教程链接:http://www.phprm.com/develop/composite.html
随意转载~但请保留教程地址★