require "D:\\xxx\bild.php";

require "D:\\xxx\cx_bild.php";

require "D:\\xxx\jt_build.php";

class Director {

    public function build($build){

        $build->buildHeader();

        $build->buildChiBang();

        $build->buildJiao();

        return $build->GetBird();

    }

}

$dir = new Director();

$duixiang = $dir->build(new BuleBild());

$Zabild = $dir->build(new Zabild());

$BuleBild = $duixiang->show();

$Zabild = $Zabild->show();

<?php

class bild {

    public $header;

    public $chibang;

    public $jiao;

    function show(){

        echo '头的颜色'.$this->header."<br>";

        echo '翅膀的颜色'.$this->chibang."<br>";

        echo '叫的颜色'.$this->jiao."<br>";

    }

}

<?php

abstract class BildBuilder{

    public  $bild;

    public function __construct()

    {

        $this->bild = new bild();

    }

    abstract function buildHeader();

    abstract function buildChiBang();

    abstract function buildJiao();

}

<?php

class BuleBild extends BildBuilder{

    public function buildHeader(){

        $this->bild->header = 'bule';

    }

    public function buildChiBang(){

        $this->bild->chibang = 'bule';

    }

    public function buildJiao(){

        $this->bild->jiao = 'bule';

    }

    public function GetBird(){

        return $this->bild;

    }

}

class Zabild extends BildBuilder{

    public function buildHeader(){

        $this->bild->header = 'Red';

    }

    public function buildChiBang(){

        $this->bild->chibang = 'huang';

    }

    public function buildJiao(){

        $this->bild->jiao = 'qings';

    }

    public function GetBird(){

        return $this->bild;

    }

}