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Date: Wed, 4 May 2016 13:59:33 +0300
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To: Stephen Coakley <me@stephencoakley.com>
Cc: internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] Re: async/await - is future reserved words in PHP 7.x?
From: ua.san.alex@gmail.com ("S.A.N")

> I think we can spoonfeed the massive undertaking a bit by spreading it
> across several iterations just to get things going. An idea I had was to
> just begin by providing coroutines as part of the language. That would
> include a `\Coroutine` class, as well as await / async keywords. This would
> at least enable third party async libraries to be more compatible since they
> would have the same await types and semantics.
>
> The next step (or at the same time as the first) is to provide some sort of
> `\EventLoopInterface` along with
>
>     \EventLoop::getLoop(): \EventLoopInterface
>     \EventLoop::setLoop(\EventLoopInterface)
>     \EventLoop::run()
>     \EventLoop::stop()
>     \EventLoop::tick()
>
> To start out, just provide the internal coroutine scheduler as a default
> implementation. Coroutines would use the "event loop" to schedule resumes.
>
> Doing so would allow even more interoperability if a library chose to
> implement `\EventLoopInterface` in its event loop, where it handles
> coroutine scheduling (or lets it fall back to the internal one), and could
> also provide I/O "extras".
>
> The final step would be to bring libuv into PHP, itself as a better default
> implementation of `\EventLoopInterface`.
>
EventLoop interface, on development stage:
https://github.com/async-interop/event-loop

PHP wrappers for libev and libeio supported PHP 7.
https://pecl.php.net/package/ev
https://pecl.php.net/package/eio

libuv - certainly better because it has everything you need and a huge
community.

Very need async/await in the PHP core (based on generators).
Perhaps there are plans in core developers, for implement async/await?