user.php

这是一个专门用来描述PHP5 OOP的电子书

<?
//User.php
//这是一个简单工厂模式的实现,用来获得一个与表单对应的User实例.
interface User{ //定义的接口
	function setUsername($username);
	function getUsername();
	function setPassword($password);
	function getPassword();
}
abstract  class LoginUser implements User { //抽象类
	private $username;
	private $password;	
	function setUsername($username){
		$this->username =  $username;
	}
	function getUsername(){
		return $this->username;
	}
	function setPassword($password){
		$this->password =  $password;
	}
	function getPassword(){
		return $this->password;
	}
	//返回子类的实例.
	static function getNormalUser($username,$password){
		$user = new NormalUser();
		$user->setUsername($username);
		$user->setPassword($password);
		return $user;
	}
}

class NormalUser extends LoginUser{	
}
?>