php设计模式三-----建造者模式

// 建造者模式

// 1.产品角色

class Bird{

    public $_head;

    public $_wing;

    public $_foot;

    function show(){

        echo ‘head:‘.$this->_head.‘<br/>‘;
        echo ‘wing:‘.$this->_wing.‘<br/>‘;
        echo ‘foot:‘.$this->_foot.‘<br/>‘;
    }

}

// 2. 抽象建造者

abstract class BirdBuilder{
    protected $_bird;

    function __construct(){
        $this->_bird = new Bird();
    }

    abstract function buildHead();
    abstract function buildWing();
    abstract function buildFoot();
    abstract function getBird();
}

// 3.具体建造者
class BlueBird extends BirdBuilder{

    function buildHead(){
        $this->_bird->_head = ‘Blue‘;
    }

    function buildWing(){
        $this->_bird->_wing = ‘Blue‘;
    }

    function buildFoot(){
        $this->_bird->_foot = ‘Blue‘;
    }

    function getBird(){
        return $this->_bird;
    }
}

class RoseBird extends BirdBuilder{
    function buildHead(){
        $this->_bird->_head = ‘Red‘;
    }

    function buildWing(){
        $this->_bird->_wing = ‘Black‘;
    }

    function buildFoot(){
        $this->_bird->_foot = ‘Green‘;
    }

    function getBird(){
        return $this->_bird;
    }
}

// 4 指挥者

class Director{

    public $bird;

    function __construct( $_builder ){
        $_builder->buildHead();
        $_builder->buildWing();
        $_builder->buildFoot();
        $this->bird = $_builder->getBird();
    }

    function getBird(){
        return $this->bird;
    }

}

class fun{
    public $head = ‘‘;
    function __construct(){
        $this->head = ‘head‘;
        echo 1;
    }
}

header(‘content-type:text/html;charset=utf8‘);

$blueBird = new BlueBird();
$director = new Director( $blueBird );
 
$director->getBird()->show();