Re: [VOTE] Undefined Variable Error Promotion

On 15/03/2022 23:02, Patrick ALLAERT wrote:

I am not against the fact this warning becomes an error per se. I am just not very fan of cherry-picking an individual kind of problem (read: notice/warning/error/...) and changing it without a more global frame.

I think we should try to hit all of them, ideally in time for PHP 9. That was the premise behind: https://externals.io/message/116918 It will likely take several RFCs until we've got it in the state we want it, some of those are more contentious than others (such as undefined array indexes). I think undefined property access should throw too, and will likely have supermajority support, but let's do it in a separate RFC. What I don't think we want is the entire package being blocked because a particular item (i.e. array keys) is contentious.