[PHP-DEV] [RFC] [Accepted] Add clamp function

[Kyle Katarn]

Hi,

Vote closed for https://wiki.php.net/rfc/clamp_v2 so I updated the wiki
accordingly, you can now review the rebased implementation on
https://github.com/php/php-src/pull/19434 and documentation on
https://github.com/php/doc-en/pull/4814

Thanks,