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Date: Mon, 16 Mar 2020 16:06:25 +0000
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To: PHP internals <internals@lists.php.net>
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Subject: [DISCUSSION] Native UUID support in PHP
From: cdtreeks@gmail.com (Aran Reeks)

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Hi Internals,

I'd like to open up a discussion around the implementation of a new
function within PHP for generating a UUID.

Whilst there are libraries out there already for PHP which can generate a
UUID, all of those libraries have the possibility to generate IDs that
*could* have a collision.

The specification for UUID versions 1 and 2 allow for collision-free ID
generation by incorporating the unique MAC addresses from network cards -
something which can't be accessed from PHP code at present.

I can see two possible methods to enable this;

   - New function added to PHP which exposes the MAC address (allowing
   external implementations for UUIDs, as well as other possible purposes a
   MAC address could be used).

   - A new PHP function which introduced a uuid() function which will
   generate and return version-compliant UUIDs.

   - Both of the above.

Thoughts and feedback welcome to kickstart conversations and if there's a
positive consensus, I'd like to put forward an RFC for this to be
introduced in PHP 8.

Best,
Aran

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