Online PHP editor | rfc for e9Rq8

@ 2015-10-17T20:40:40Z

<?php

abstract class DomainEvent
{
    private static $events = [];

    /**
     * @var \DateTime
     */
    private $occurredOn;

    private function __construct()
    {
        static::addEvent($this);
        $this->occurredOn = new \DateTime();
    }

    public static function trigger(...$args)
    {
        $event = new static();
        $event->instantiate(...$args);

        return $event;
    }

    abstract protected function instantiate(...$args);

    private static function addEvent($event)
    {
        self::$events[] = $event;
    }

    public static function getEvents()
    {
        return self::$events;
    }

    /**
     * @return DateTime
     */
    public function getOccurredOn()
    {
        return $this->occurredOn;
    }
}

class UserRegisteredEvent extends DomainEvent
{
    private $data;

    protected function instantiate(...$args)
    {
        $this->data = $args;
    }
}

class User
{
    /**
     * @var string
     */
    private $username;

    /**
     * User constructor.
     *
     * @param string $username
     */
    public function __construct($username)
    {
        $this->username = $username;
        UserRegisteredEvent::trigger($this);
    }

    /**
     * @return string
     */
    public function getUsername()
    {
        return $this->username;
    }
}

$user = new User('Jimmy K. Oak');

$events = DomainEvent::getEvents();

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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