Req #79669 [Fbk->Sus]: Nullable variables

Edit report at https://bugs.php.net/bug.php?id=79669&edit=1 ID: 79669 Updated by: cmb@php.net Reported by: valentiny510 at gmail dot com Summary: Nullable variables -Status: Feedback +Status: Suspended Type: Feature/Change Request Package: Variables related Operating System: nix PHP Version: Next Major Version Block user comment: N Private report: N New Comment: This is obviously controversial (and there may be alternative solutions), so requires discussion for which this bug tracker is not suitable. Instead, please send a mail to the internals mailing list[1]. For the time being, I'm suspending this ticket. Thanks. [1] <https://www.php.net/mailing-lists.php#internals> Previous Comments: ------------------------------------------------------------------------ [2020-06-03 12:05:56] valentiny510 at gmail dot com The example you gave $array['key'] ??= computeDefault(); is pointless, To ASSIGN a default value for $a can be achived "normally" $a = $b ?? compute_default( ); I want the ASSIGNMENT of $a to be NULLABLE if $b is NOT SET $a = $b; var_dump($a); null (without any errors!) So I don't want the MANUALLY write $array['key'] ??= NULL; COMPRENDE? Is the Exact behaviour I was talking about... Damn, you guys confused me for a bit ------------------------------------------------------------------------ [2020-06-03 12:02:37] bugreports at gmail dot com > $a ??= $b; > where $b doesn't exists, still throw the error "Undefined variable: $b" which is a good thing, i haven't seen "Undefined variable" in code which should not be fixed the last 15 years and you should ask yourself why $b is undefined here ------------------------------------------------------------------------ [2020-06-03 11:51:13] valentiny510 at gmail dot com oh sorry, is implemented, BUT... it DOESN'T do what I want, I don't want to set a "default" $a ??= $b; where $b doesn't exists, still throw the error "Undefined variable: $b" ------------------------------------------------------------------------ [2020-06-03 11:50:03] bugreports at gmail dot com > What version? I have seen the RFC, but I don't think is implemented yet why don't you just do your homework and at least read the feature page of each new release or at least try it out instead of thinking? > and still ??= is 1 character larger than =? that's ridiculous and null coalescing is always ?? so you don't have any point because it's more important to be consistent within a programming language instead save one char https://www.php.net/manual/de/migration74.new-features.php Null coalescing assignment operator ¶ <?php $array['key'] ??= computeDefault(); // is roughly equivalent to if (!isset($array['key'])) { $array['key'] = computeDefault(); } ?> ------------------------------------------------------------------------ [2020-06-03 11:42:52] valentiny510 at gmail dot com btw, thank you and still ??= is 1 character larger than =? :P it should be only ?= just like the others += *= etc... ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=79669 -- Edit this bug report at https://bugs.php.net/bug.php?id=79669&edit=1