注册树模式

设计模式

把对象的实例注册到全局的对象树上

实现原理

<?php
/**
 * 注册树模式
 *
 * @author     Luffy (lufei@swoole.com)
 * @date       2019/9/20
 * @copyright  Swoole, Inc.
 * @package    sy-records/design-patterns
 */
namespace Luffy\DesignPatterns\RegistryTree;
/**
 * Class RegistryTree
 * @package Luffy\DesignPatterns\RegistryTree
 */
class RegistryTree
{
    private static $objects;
    public static function set($alias, $object)
    {
        self::$objects[$alias] = $object;
    }
    public static function get($alias)
    {
        if (!isset(self::$objects[$alias])) {
            return false;
        }
        return self::$objects[$alias];
    }
    public static function _unset($alias)
    {
		if(isset(self::$objects[$alias])){
			unset(self::$objects[$alias]);
            return true;
        }
        return false;
    }
}

<?php
/**
 * 注册树测试文件
 *
 * @author     Luffy (lufei@swoole.com)
 * @date       2019/9/20
 * @copyright  Swoole, Inc.
 * @package    sy-records/design-patterns
 */
include __DIR__ . '/../vendor/autoload.php';
// 注册树
use Luffy\DesignPatterns\RegistryTree\RegistryTree;
class Demo
{
    public function index()
    {
        echo "红红火火恍恍惚惚\n";
    }
}
$demo = new Demo();
var_dump($demo);
$demo->index();
// 添加进对象树中
RegistryTree::set("demo", $demo);
// 获取对象
$demo2 = RegistryTree::get("demo");
var_dump($demo2);
$demo2->index();
// 删除对象
RegistryTree::_unset("demo");
// 再次获取
$demo_obj = RegistryTree::get("demo");
var_dump($demo_obj);
$demo_obj->index();

注册树,单例,工厂一起使用

<?php
/**
 * 注册树、单例、工厂一起使用
 *
 * @author     Luffy (lufei@swoole.com)
 * @date       2019/9/20
 * @copyright  Swoole, Inc.
 * @package    sy-records/design-patterns
 */
include __DIR__ . '/../vendor/autoload.php';
// 注册树
use Luffy\DesignPatterns\RegistryTree\RegistryTree;
/**
 * 单例
 * Class SingletonDemo
 */
class SingletonDemo
{
    /**
     * @var
     */
    private static $instance;
    private $content;
    public static function getInstance()
    {
        if (!self::$instance instanceof self) {
            static::$instance = new self();
        }
        return static::$instance;
    }
    /**
     * SingletonDemo constructor.
     */
    private function __construct()
    {
        $this->content = rand(1, 9999);
    }
    private function __clone()
    {
    }
    private function __wakeup()
    {
        // TODO: Implement __wakeup() method.
    }
    public function test()
    {
        return $this->content;
    }
}
/**
 * 工厂
 * Class Factory
 */
class Factory
{
    public static function create()
    {
        // 返回对象
        return SingletonDemo::getInstance();
    }
}
RegistryTree::set("singleton", Factory::create());
$obj = RegistryTree::get("singleton");
var_dump($obj);
echo $obj->test();

参考资料:
swoole微课堂
GitHub