Bug #67778 [Opn]: Constructor overriding and derived classes

Edit report at https://bugs.php.net/bug.php?id=67778&edit=1 ID: 67778 Updated by: stas@php.net Reported by: joelm@php.net Summary: Constructor overriding and derived classes Status: Open Type: Bug Package: PHP Language Specification PHP Version: Irrelevant Block user comment: N Private report: N New Comment: Abstract is not an override, it's an implementation, since abstract is not a method definition, so there's nothing to override. You only override an existing method. I'll refine the language to emphasize this fact. Previous Comments: ------------------------------------------------------------------------ [2014-08-05 17:05:35] joelm@php.net Description: ------------ https://github.com/php/php-langspec/blob/master/spec/14-classes.md#constructors "Constructors can be overridden in a derived class by redeclaring them. However, an overriding constructor need not have the same signature as defined in the base class." This is not accurate. If there is no abstract decl for __construct in the inheritance hierarchy, then the derived class can use whatever signature it wants. If there is an abstract decl for __construct in the inheritance hierarchy, then the derived class's __construct method needs to match the signature of the abstract decl. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67778&edit=1