Bug #67777 [Opn->Csd]: Method overriding and derived classes

Edit report at https://bugs.php.net/bug.php?id=67777&edit=1 ID: 67777 Updated by: stas@php.net Reported by: joelm@php.net Summary: Method overriding and derived classes -Status: Open +Status: Closed Type: Bug Package: PHP Language Specification PHP Version: Irrelevant Block user comment: N Private report: N New Comment: Automatic comment on behalf of smalyshev@gmail.com Revision: http://git.php.net/?p=php-langspec.git;a=commit;h=a763e15f705de443d1529e50e479bf86c5f0d7be Log: Fix bug #67777 Previous Comments: ------------------------------------------------------------------------ [2014-11-27 13:01:19] cmbecker69 at gmx dot de > When a derived class overrides a method, if there is no abstract > decl (either abstract decl in an abstract parent or a decl in an > implemented interface) in the inheritance hierarchy then > whatever signature you want can be used for the derived method. In this case, however, the derived class doesn't *override* a method, but rather it *introduces* a new method. ------------------------------------------------------------------------ [2014-11-27 10:44:52] jpauli@php.net Is this a PHP bug ? ------------------------------------------------------------------------ [2014-08-05 17:01:00] joelm@php.net Description: ------------ https://github.com/php/php-langspec/blob/master/spec/14-classes.md#general "Methods and properties from a base class can be overridden in a derived class by redeclaring them with the same signature defined in the base class." This is not accurate. When a derived class overrides a method, if there is no abstract decl (either abstract decl in an abstract parent or a decl in an implemented interface) in the inheritance hierarchy then whatever signature you want can be used for the derived method. If there is an abstract decl in the inheritance hierarchy, then the derived method's signature must match the signature of the abstract decl. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67777&edit=1