PHP设计模式之建造者模式（Builder）原理与用法案例详解

//建造者模式，目的是消除其它对象复杂的创建过程
/* 描述一个用户的类，包含用户姓名，年龄，金钱 */
class UserInfo {
    protected $userName = ''; 
    protected $userAge = '';
    protected $userMoney = '';
    public function setUserName($userName) {
        $this- userName = $userName;
    }
    public function setUserAge($userAge) {
        $this- userAge = $userAge;
    }
    public function setUserMoney($userMoney) {
        $this- userMoney = $userMoney;
    }
    public function getPeople() {
        echo "这个人的姓名是：" . $this- setUserName . ',年龄是：' . $this- userAge . ', 金钱：' . $this- userMoney;
    }
}
/* 实例化，并且创建这个用户的时候，是很痛苦的，需要设置用户名，年龄和金钱*/
$peopleInfo = array(
    'userName' =  'initphp',
    'userAge' =  28,
    'userMoney' =  '100元'
    );
$UserInfo = new UserInfo;
//下面需要一步步的设置用户信息，才能得到用户详细信息，过程纠结而痛苦
$UserInfo- setUserName($peopleInfo['userName']); 
$UserInfo- setUserAge($peopleInfo['userAge']);
$UserInfo- setUserMoney($peopleInfo['userMoney']);
$UserInfo- getPeople();

//UserInfoBuilder 用户信息建造者类，将UserInfo的创建过程封装掉，开发者使用起来心情舒畅
<?php
//建造者模式，目的是消除其它对象复杂的创建过程
include("UserInfo.php");
class UserInfoBuilder {
    protected $obj;
    public function __construct() {
        $this- obj = new UserInfo;
    }
    public function buildPeople($peopleInfo) {
        $this- obj- setUserName($peopleInfo['userName']);
        $this- obj- setUserAge($peopleInfo['userAge']);
        $this- obj- setUserMoney($peopleInfo['userMoney']);
    } 
    public function getPeople() {
        $this- obj- getPeople();
    }
}
/* 创建过程被封装了，用户使用简单了 */
$peopleInfo = array(
    'userName' =  'initphp',
    'userAge' =  28,
    'userMoney' =  '100元'
    );
$UserInfoBuilder = new UserInfoBuilder;
$UserInfoBuilder- buildPeople($peopleInfo); //直接一个build
$UserInfoBuilder- getPeople();

<?php
/**
 * Created by PhpStorm.
 * User: Jiang
 * Date: 2015/4/25
 * Time: 9:31
 */
/**具体产品角色 鸟类
 * Class Bird
 */
class Bird
{
  public $_head;
  public $_wing;
  public $_foot;
  function show()
  {
    echo "头的颜色:{$this- _head}<br/ ";
    echo "翅膀的颜色:{$this- _wing}<br/ ";
    echo "脚的颜色:{$this- _foot}<br/ ";
  }
}
/**抽象鸟的建造者(生成器)
 * Class BirdBuilder
 */
abstract class BirdBuilder
{
  protected $_bird;
  function __construct()
  {
    $this- _bird=new Bird();
  }
  abstract function BuildHead();
  abstract function BuildWing();
  abstract function BuildFoot();
  abstract function GetBird();
}
/**具体鸟的建造者(生成器)  蓝鸟
 * Class BlueBird
 */
class BlueBird extends BirdBuilder
{
  function BuildHead()
  {
    // TODO: Implement BuilderHead() method.
    $this- _bird- _head="Blue";
  }
  function BuildWing()
  {
    // TODO: Implement BuilderWing() method.
    $this- _bird- _wing="Blue";
  }
  function BuildFoot()
  {
    // TODO: Implement BuilderFoot() method.
    $this- _bird- _foot="Blue";
  }
  function GetBird()
  {
    // TODO: Implement GetBird() method.
    return $this- _bird;
  }
}
/**玫瑰鸟
 * Class RoseBird
 */
class RoseBird extends BirdBuilder
{
  function BuildHead()
  {
    // TODO: Implement BuildHead() method.
    $this- _bird- _head="Red";
  }
  function BuildWing()
  {
    // TODO: Implement BuildWing() method.
    $this- _bird- _wing="Black";
  }
  function BuildFoot()
  {
    // TODO: Implement BuildFoot() method.
    $this- _bird- _foot="Green";
  }
  function GetBird()
  {
    // TODO: Implement GetBird() method.
    return $this- _bird;
  }
}
/**指挥者
 * Class Director
 */
class Director
{
  /**
   * @param $_builder   建造者
   * @return mixed     产品类：鸟
   */
  function Construct($_builder)
  {
    $_builder- BuildHead();
    $_builder- BuildWing();
    $_builder- BuildFoot();
    return $_builder- GetBird();
  }
}
//调用代码
header("Content-Type:text/html;charset=utf-8");
//------------------------生成器模式测试代码------------------
require_once "./Builder/Builder.php";
$director=new Director();
echo "蓝鸟的组成：<hr/ ";
$blue_bird=$director- Construct(new BlueBird());
$blue_bird- Show();
echo "<br/ Rose鸟的组成：<hr/ ";
$rose_bird=$director- Construct(new RoseBird());
$rose_bird- Show();

<?php
/** 
* 建造者模式
*/ 
//需要建造的产品(product)
class Car
{/*{{{*/
public $name;
public $engine;//发动机
public $chassis;//底盘
public $body;//车身
public $equipment;//电器设备
public function setName($name)
{
$this- name = $name;
}
public function setEngine($engine)
{
$this- engine = $engine;
}
public function setChassis($chassis)
{
$this- chassis = $chassis;
}
public function setBody($body)
{
$this- body = $body;
}
public function setEquipment($equipment)
{
$this- equipment = $equipment;
}
public function show()
{
echo "名称:".$this- name."rn";
echo "引擎:".$this- engine."rn";
echo "底盘:".$this- chassis."rn";
echo "车身:".$this- body."rn";
echo "电子设备:".$this- equipment."rn";
}
}/*}}}*/
//builder
interface IBuilder
{/*{{{*/
public function builderName();
public function builderEngine();
public function builderChassis();
public function builderBody();
public function builderEquipment();
public function getCar();
}/*}}}*/
//红旗车builder
class RedBuilder implements IBuilder
{/*{{{*/
public $car;
public function __construct()
{
$this- car = new Car();
}
public function builderName()
{
$this- car- setName('红旗'); 
}
public function builderEngine()
{
$this- car- setEngine('国产发动机'); 
}
public function builderChassis()
{
$this- car- setChassis('超大底盘'); 
}
public function builderBody()
{
$this- car- setBody('超大'); 
}
public function builderEquipment()
{
$this- car- setEquipment('电子设备'); 
}
public function getCar()
{
return $this- car;
}
}/*}}}*/
//QQ车builder
class QQBuilder implements IBuilder
{/*{{{*/
public $car;
public function __construct()
{
$this- car = new Car();
}
public function builderName()
{
$this- car- setName('QQ'); 
}
public function builderEngine()
{
$this- car- setEngine('国产发动机'); 
}
public function builderChassis()
{
$this- car- setChassis('小底盘'); 
}
public function builderBody()
{
$this- car- setBody('小'); 
}
public function builderEquipment()
{
$this- car- setEquipment('电子设备'); 
}
public function getCar()
{
return $this- car;
}
}/*}}}*/
//组装者(director)
class CarDirector
{/*{{{*/
public function make(IBuilder $builder)
{
$builder- builderName();
$builder- builderEngine();
$builder- builderChassis();
$builder- builderBody();
$builder- builderEquipment();
return $builder- getCar();
}
}/*}}}*/
class Client
{/*{{{*/
public static function main($argv)
{
$director = new CarDirector(); 
$redBuilder = new RedBuilder();
$car = $director- make($redBuilder);
$car- show();
echo "rn";
$qqBuilder = new QQBuilder();
$car = $director- make($qqBuilder);
$car- show();
}
}/*}}}*/
Client::main($argv);
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