装饰模式

什么叫装饰模式？

动态地给一个对象添加一些额外的职责

 

对人的装饰

<?phpclass Person{protected $name;function __construct($name=''){$this->name = $name;}public function show(){echo "装扮的".$this->name;}}class Decorator extends Person{protected $component;public function Decorate(Person $component){$this->component = $component;}public function show(){if($this->component != null){$this->component->show();}}}class Tshirts extends Decorator{public function show(){echo "大T恤 ";parent::show();}}class BigTrouser extends Decorator{public function show(){echo "垮裤 ";parent::show();}}$person = new Person('我');$tshirt = new Tshirts();$bigtrouser = new BigTrouser();$tshirt->Decorate($person);$bigtrouser->Decorate($tshirt);$bigtrouser->show();

结果

垮裤 大T恤 装扮的我