Bug #80487 [Opn->Nab]: PHP returns static when expecting self

Edit report at https://bugs.php.net/bug.php?id=80487&edit=1 ID: 80487 Updated by: levim@php.net Reported by: raincomplain at outlook dot com Summary: PHP returns static when expecting self -Status: Open +Status: Not a bug Type: Bug Package: Class/Object related Operating System: Irrelevant PHP Version: 8.0.0 Block user comment: N Private report: N New Comment: There isn't a bug here. A return type of self in this case means A or any sub-type of A. To change this would be a _massive_ backwards compatibility break. Previous Comments: ------------------------------------------------------------------------ [2020-12-05 03:20:15] raincomplain at outlook dot com echo $a->get()->name(); is a typo please ignore it ------------------------------------------------------------------------ [2020-12-05 03:15:25] raincomplain at outlook dot com Description: ------------ PHP 8 throws a TypeError when expecting static but getting self, which makes sense, but it seems to work the other way around! and PHP will not complain when expecting self but getting static, this is not consistent and can lead to unexpected result too. Test script: --------------- class A { public static function get(): self { return new static; } public static function name(): void { echo 'A'; } } class B extends A { public static function name(): void { echo 'B'; } } B::get()::name(); echo $a->get()->name(); Expected result: ---------------- Fatal error: Uncaught TypeError: A::get(): Return value must be of type A, B returned Actual result: -------------- B ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=80487&edit=1