[RFC] Null Coalescing Assignment in Method Signature

Hello all, I am writing to see if anyone is interested in an RFC for ability to automatically coalesce nullable method parameters with the supplied default.. It would look something like this: function foo(?array $bar ??= []) { This would result in $bar automatically converting to an array if null is passed, as opposed to either having to do a null check before the function call and not passing parameter at all - or alternatively having to do something like: function foo(?array $bar = []) {     $bar ??= []; I don’t see this creating any BC incompatibilites and the ??= syntax is something already in use in PHP since 7~ I don’t have any experience with C, so would ideally love it someone could help with the development with this, or maybe point me in the right direction. I would also require RFC Karma if people are interested in opening a discussion about this (dansimkus) Thank you all for your time Regards, Daniel Simkus