PHP 设计模式之数据对象映射模式

<?php

// 数据对象映射模式
class User
{
public $id;
public $name;
public $mobile;
public $regtime;

private $dataFile;

public function __construct($id)
{
$this->dataFile = "user.$id.data";
if(file_exists($this->dataFile)) {
$data = json_decode(file_get_contents($this->dataFile), 1);

$this->name = $data['name'];
$this->mobile = $data['mobile'];
$this->regtime = $data['regtime'];
}
}

public function __destruct()
{
return file_put_contents($this->dataFile, json_encode([
'name' => $this->name,
'mobile' => $this->mobile,
'regtime' => $this->regtime
]));
}
}

// 结合注册器模式
class Register
{
private static $object;

public static function get($key)
{
return isset(self::$object[$key]) ? self::$object[$key] : false;
}

public static function set($key, $obj)
{
self::$object[$key] = $obj;
}
}

// 结合工厂模式
class Factory
{
public static function getUser($id)
{
if(!$user = Register::get($id)) {
$user = new User($id);
Register::set($id, $user);
echo "register set \n";
}
return $user;
}
}

class Page
{
public function index()
{
$user = Factory::getUser(1);
$user->mobile = '15165854585';
$user->name = 'test';
$user->regtime = time();
}

public function test()
{
$user = Factory::getUser(1);
$user->mobile = '15165854585';
$user->name = 'test23333';
$user->regtime = time();
}
}

$page = new Page;
$page->index();
$page->test();