PHP设计模式之构造器（Builder）

<?php
 /*相当于抽象的产品*/
 abstract class Person{
   public $head;
   public $body;
   public $foot;
   public function __get($property_name){
    if(isset($property_name)){
     return $property_name;
    }
   }
   public function __set($property_name,$value){
    $this->$property_name = $value;
   }
  }
  /*具体的产品*/
  class Man extends Person{
   
  }
  
  /*抽象的工厂*/
  interface PersonBuilder{
   function BuildHead();
   function BuildBody();
   function BuildFoot();
   function BuildPerson();
  }
  /*具体化了的生产用的工厂*/
  class ManBuilder implements PersonBuilder{
   public $man;
   
   function __construct(){
    $this->man = new Man();
   }
   function BuildHead(){
    $this->man->head = "建造了男人的头";
   }
   function BuildBody(){
    $this->man->body = "建造了男人的身体";
   }
   function BuildFoot(){
    $this->man->foot = "建造了男人的脚";
   }
   function BuildPerson(){
    return $this->man;
   }
  }
  
  function ConstractPerson($personbuilder){
   $personbuilder->BuildHead();
   $personbuilder->BuildBody();
   $personbuilder->BuildFoot();
   return $personbuilder->BuildPerson();
  }
  
  function Client(){
   $manbuilder = new ManBuilder();
   $man = ConstractPerson($manbuilder);
   echo $man->head."<br/>";
   echo $man->body."<br/>";
   echo $man->foot."<br/>";
  }
?>
<?php
 Client();
?>
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