[Strawpoll] Promoting redefining constant to exception

Internals, While cleaning up some PRs I was prompted to re-visit one I had outstanding about exception-throwing behaviour when redefining constants, this applies to functions like define and language syntax constructs such as const. There have been a few discussions in the past about the topic. Here is one from 2016 from Dmitry: https://wiki.php.net/rfc/constant_redefinition Discussion: https://externals.io/message/93885 My own PR: https://github.com/php/php-src/pull/5265 Since Dmitry's RFC was made in 2016, and my PR a while ago, attempted redeclaration was promoted from a notice to a warning, but I still think it's sensible to go one step further. There was mention on github that there was some resistence to promotion to exception in the past, but I think there is a strong possibility that the mood may be different many years later, with PHPs positive moves towards throwing on poorly defined or illogical behaviour. To gauge this, I'm throwing out a non-binding strawpoll to get the lay of the land before doing anything else with it. If there is general favour I'll fix up my patch and do a proper RFC. https://wiki.php.net/redefine_constants_exception_strawpoll Mark Randall