Event && Listener

安装所需的扩展包

composer require illuminate/events

新建 event 文件 src/Events/UserHasRegisteredEvent.php

<?php

namespace App\Events;

class UserHasRegisteredEvent
{
    protected $username;

    public function __construct($username)
    {
        $this->username = $username;
    }

    public function getUsername()
    {
        return $this->username;
    }
}

新建 listener 文件 src/Listeners/SendWelcomingEmail.php

<?php

namespace App\Listeners;

use App\Events\UserHasRegisteredEvent;

class SendWelcomingEmail
{
    public function handle(UserHasRegisteredEvent $event)
    {
        echo $event->getUsername() . ', welcome to my world!';
    }
}

项目根目录新建入口 index/event.php

<?php

include __DIR__ . '/../vendor/autoload.php';

use App\Events\UserHasRegisteredEvent;
use App\Listeners\SendWelcomingEmail;

$dispatcher = new \Illuminate\Events\Dispatcher();

// Defining the listeners
$dispatcher->listen([UserHasRegisteredEvent::class], SendWelcomingEmail::class);

// Firing the event
$dispatcher->dispatch(new UserHasRegisteredEvent('Joey'));

命令行开启服务 php -S localhost:8000 并访问 http://localhost:8000/index/event.php 即可。

由于没有统一的观察者绑定入口 （laravel 中的 EventServiceProvider），所以都需要在使用时进行手动绑定，待优化。

参考 致谢

1. mattstauffer/Torch

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