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();
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