OO的初体验

<?php
 class BingXiang{
  private $door=false;
  private $model="haier";
  function openDoor(){
   echo "你已经打开了门。"."<br />";
   return $this->door=true;
  }
  function closeDoor(){
   echo "你关了门。"."<br />";
   return $this->door=false;
  }
 }

 class Humen{
  protected $name;
  protected $gender;
  protected $age;
  private $action;
  function __construct($name,$gender,$age){
   $this->action= new BingXiang();
   $this->name=$name;
   $this->gender=$gender;
   $this->age=$age;
  }
  function getInfo(){
   return $this->name;
     }
  function doAction(){
   $this->action->openDoor();
   $this->action->closeDoor();
  }
 }
$a = new Humen("ceallan","boy","20");
echo $a->getInfo()."<br />";
echo $a->doAction();

?>