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Date: Wed, 4 Nov 2020 23:05:22 +0100
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Subject: Re: [PHP-DEV] [RFC] Short-function syntax
From: enunomaduro@gmail.com (Nuno Maduro)

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Hey Larry,

In my vision, this proposal is a good addition to PHP exactly as stated in
this pull request (https://github.com/php/php-src/pull/6221): where only
the "=> expr;" is introduced, and not the "fn".

For visual consistency in the future of PHP functions/methods, I think it's
important to differ "=> expr;" from "fn":

- "=> expr;" means "arrow": syntax that defines functions/methods with
one-line return expressions.
- "fn" means "short": syntax that makes functions inherit scope. It's
already in use by arrow short closures (
https://wiki.php.net/rfc/arrow_functions_v2 ).

Therefore, from my understanding, your proposal would allow all the
following things to be possible:
```php
// arrow function
function foo() => /** */;

// arrow closure
$foo = function () => /** */;

// fn/short arrow closure ( already introduced in PHP 7.4 )
$foo = fn() => /** */;

class Foo {
    // arrow method
    poublic function bar() => /** */;
}
```

If this proposal keeps using the "function", and not the "fn", I don't see
any conflict with my Proposal (multi-line short closures -
https://github.com/php/php-src/pull/6246).

Good luck with the RFC.

- Nuno

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