PHP简单装饰器模式实现与用法示例

本文实例讲述了PHP简单装饰器模式实现与用法。分享给大家供大家参考，具体如下：<?

本文实例讲述了PHP简单装饰器模式实现与用法。分享给大家供大家参考，具体如下：

<?php
//装饰器模式-在不改变原有类的结构上，对类的功能那个作补充
//武器基类
abstract class Weapon{
 abstract public function descriptions();
 abstract public function cost();
}
//剑类
class Glave extends Weapon{
 public function descriptions(){
 return 'Glave';
 }
 public function cost(){
 return "100";
 }
}
//匕首类
class Knife extends Weapon{
 public function descriptions(){
 return __CLASS__;
 }
 public function cost(){
 return "80";
 }
}
//斧类
class Axe extends Weapon{
 public function descriptions(){
 return __CLASS__;
 }
 public function cost(){
 return "200";
 }
}
//属性类
class Property extends Weapon{
 protected $_weapon = null;
 protected $_price = 0;
 protected $_descriptions = '';
 public function __construct(Weapon $weapon){
 $this->_weapon = $weapon;
 }
 public function cost(){
 return $this->_weapon->cost() + $this->_price;
 }
 public function descriptions(){
 return $this->_weapon->descriptions().$this->_descriptions;
 }
}
//力量属性
class Strength extends Property{
 protected $_price = 30;
 protected $_descriptions = '+ Strength';
}
//敏捷属性
class Agility extends Property{
 protected $_price = 50;
 protected $_descriptions = '+ Agility';
}
//智力属性
class Intellect extends Property{
 protected $_price = 20;
 protected $_descriptions = '+ Intellect';
}
$weapon = new Agility(new Strength(new Strength(new Glave())));
echo $weapon->cost();
echo $weapon->descriptions();