user.php

这是一个专门用来描述PHP5 OOP的电子书

<?
/*
* 定义了 User接口.
* 和子类 NormalUser,VipUser,InnerUser 
*/
//User接口,定义了三个抽象方法.
interface User{
	public function getName();
	public function setName($_name);
	public function getDiscount();
}
abstract class AbstractUser implements User{
	private $name = ""; //名字
	protected  $discount = 0; //折扣
	protected  $grade = "";  //级别
	
	public function __construct($_name){
		$this->setName($_name);
	}
	public function getName(){
		return $this->name;
	}
	public function setName($_name){
		$this->name = $_name;
	}
	public function getDiscount(){
		return $this->discount;
	}
	
	public function getGrade(){
		return $this->grade;
	}
}
class NormalUser extends AbstractUser  {	
	protected  $discount = 1.0;
	protected  $grade = "NormalUser";
}

class VipUser extends AbstractUser {
	protected  $discount = 0.8;
	protected  $grade = "VipUser";
}

class InnerUser extends AbstractUser {
	protected  $discount = 0.7;
	protected  $grade = "InnerUser";
}
?>