Req #71271 [Wfx]: Allow final abstract class {}

Edit report at https://bugs.php.net/bug.php?id=71271&edit=1 ID: 71271 User updated by: andreas at dqxtech dot net Reported by: andreas at dqxtech dot net Summary: Allow final abstract class {} Status: Wont fix Type: Feature/Change Request Package: Class/Object related PHP Version: 7.0.2RC1 Block user comment: N Private report: N New Comment: It seems this is the discussion: https://github.com/php/php-src/pull/923 Previous Comments: ------------------------------------------------------------------------ [2016-01-04 05:43:10] andreas at dqxtech dot net Is there any discussion I could have a look at, that explains why the RFC was discarded by most participants? Also, what I propose is not really the same, it is much simpler: Allow the combination of the two keywords, with the regular natural consequences. abstract: Cannot instantiate. final: Cannot inherit. I do NOT propose that a final + abstract class should only have static members. I think it would be a bad idea to enforce this on the language level. On the other hand, an IDE could very well notify people about the pointlessness of non-static methods within a final abstract class. Unlike the RFC, this simple proposal adds no confusion and no magic. Everything will behave as one would expect. ------------------------------------------------------------------------ [2016-01-04 05:31:18] requinix@php.net The idea was considered and declined. https://wiki.php.net/rfc/abstract_final_class ------------------------------------------------------------------------ [2016-01-04 05:21:15] andreas at dqxtech dot net Description: ------------ It should be allowed to make a class both final and abstract, to make it a place for static methods. There is no good reason to not allow this. It is already possible to achieve the same or a similar effect with final + a private constructor. But this is unnecessarily verbose. Test script: --------------- <?php abstract final class C { static function foo() {} } Expected result: ---------------- should work just fine. Actual result: -------------- Fatal error: Cannot use the final modifier on an abstract class ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=71271&edit=1