ID: 45601
Comment by: david at grudl dot com
Reported By: david at grudl dot com
Status: Open
Bug Type: Feature/Change Request
Operating System: irrelevant
PHP Version: 5.3CVS-2008-07-23 (snap)
New Comment:
p.s. is really the error message formulation "(previously declared
abstract in IHuman)" correct?
Previous Comments:
------------------------------------------------------------------------
[2008-07-23 11:30:28] david at grudl dot com
Description:
------------
I think this fatal error is needless.
Interface implementors can append optional parameter:
interface IAnimal
{
function speak();
}
class Dog implements IAnimal
{
function speak($optional = NULL)
{
echo 'Bark!';
}
}
class Labrador extends Dog
{
function speak($optional = NULL, $anotherOptinal = NULL)
{
...
}
}
That's correct behaviour. But the same behaviour is unallowed for
interface extenders.
Reproduce code:
---------------
interface IAnimal
{
function speak();
}
interface IHuman extends IAnimal
{
function speak($language = NULL);
}
Expected result:
----------------
no error
Actual result:
--------------
Fatal error: Can't inherit abstract function IAnimal::speak()
(previously declared abstract in IHuman)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=45601&edit=1
