<?php

// php 中的匿名类 举例应用中的框架 需要 logger 日志打印

// 首先有应用类
/**
 *
 * @property Cache $cache
 * @author Administrator
 *        
 */
class App
{

    /**
     *
     * @var Log
     */
    public $logger;

    /**
     *
     * @return the $logger
     */
    public function getLogger(): Log
    {
        return $this->logger;
    }

    /**
     *
     * @param Log $logger            
     */
    public function setLogger(Log $logger)
    {
        $this->logger = $logger;
    }

    /**
     *
     * @return the $cache
     */
    public function getCache(): Cache
    {
        return $this->cache;
    }

    /**
     *
     * @param Cache $cache            
     */
    public function setCache(Cache $cache)
    {
        $this->cache = $cache;
    }
}

// 然后就是 日志类的接口规范
interface Log
{

    /**
     *
     * @param string $msg            
     * @return string
     */
    public function getLogMsg(string $msg): string;
}

// 缓存规范接口
interface Cache
{

    public function write(string $key, string $val): bool;

    public function read(string $key): string;
}

$app = new App();

// php 实现匿名类
$app->setLogger(new class() implements Log {

    /**
     *
     * {@inheritdoc}
     *
     * @see Log::getLogMsg()
     */
    public function getLogMsg(string $msg): string
    {
        // TODO Auto-generated method stub
        return $msg;
    }
});

echo ($app->getLogger()->getLogMsg("jll")); //jllstring

$app->setCache(new class() implements Cache {

    public $map = [];

    /**
     *
     * {@inheritdoc}
     *
     * @see Cache::write()
     */
    public function write(string $key, string $val): bool
    {
        // TODO Auto-generated method stub
        $this->map[$key] = $val;
        return true;
    }

    /**
     *
     * {@inheritdoc}
     *
     * @see Cache::read()
     */
    public function read(string $key): string
    {
        // TODO Auto-generated method stub
        return $this->map[$key];
    }
});

$app->cache->write("weng", "miaomiao");

var_dump($app->cache->read("weng")); //miaomiao