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:
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<?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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希望本文所述对大家PHP程序设计有所帮助。