====== Straw Poll: Redefine Constants Exception ======
  * Date: 2022-01-23
  * Author: Mark Randall, marandall@php.net
  * Status: Strawpoll
 
There have been a discussions in the past about upgrading the attempted redeclaration of constants to be an exception (ValueError).

Here is one from 2016 from Dmitry:
https://wiki.php.net/rfc/constant_redefinition

Discussion:
https://externals.io/message/93885

Since this RFC was made in 2016, attempted redeclaration was promoted to a warning instead of a notice.

As internals has been making efforts in recent years to move towards saner error handling this seems like a suitable candidate for tightening up, so I would like to collect opinions on how many people would be in favour of bumping this warning once more up to an exception (likely a ValueError) on the basis that attempting to redefine a constant is impossible, so is a programming error.

<doodle title="Strawpoll: Promote attempts at redeclaring constants to Exception" auth="Mark Randall" voteType="single" closed="false">
   * Yes - In 8.2
   * Yes - In 9.0
   * No - Leave as Warning
</doodle>