[PHP-DEV] RFC: Support Closures in constant expressions

[Tim Düsterhus]

Hi

Volker and I would like to start discussion on our RFC to "Support 
Closures in constant expressions".

Please find the following resources for your reference:

- RFC: https://wiki.php.net/rfc/closures_in_const_expr
- Implementation: https://github.com/php/php-src/pull/16458

Best regards
Tim Düsterhus