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Bug #67777 Method overriding and derived classes
Submitted: 2014-08-05 17:01 UTC Modified: 2014-11-27 10:44 UTC
Votes:1
Avg. Score:3.0 ± 0.0
Reproduced:0 of 0 (0.0%)
From: joelm@php.net Assigned:
Status: Closed Package: PHP Language Specification
PHP Version: Irrelevant OS:
Private report: No CVE-ID: None
View Developer Edit
 [2014-08-05 17:01 UTC] 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.

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 [2014-08-05 17:04 UTC] joelm@php.net
-Summary: Overriding and derived classes +Summary: Method overriding and derived classes
 [2014-11-27 10:44 UTC] jpauli@php.net 
Is this a PHP bug ?
 [2014-11-27 13:01 UTC] 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.
 [2015-06-28 21:48 UTC] stas@php.net 
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
 [2015-06-28 21:48 UTC] stas@php.net
-Status: Open +Status: Closed
 [2015-06-28 23:20 UTC] stas@php.net 
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
 
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