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Date: Wed, 29 Jun 2011 23:00:52 +0200
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Subject: Re: [PHP-DEV] Fix for #53727 (is_subclass_of resolution with
 interfaces)
From: kontakt@beberlei.de (Benjamin Eberlei)

On Wed, 29 Jun 2011 22:22:54 +0200
David Z=C3=BClke <david.zuelke@bitextender.com> wrote:

> On 29.06.2011, at 22:20, Paul Dragoonis wrote:
>=20
> > On Wed, Jun 29, 2011 at 8:49 PM, Ralph Schindler <ralph@smashlabs.com> =
wrote:
> >> Correct.
> >>=20
> >> I was hasty in that example, the first was copied & tested (and is ref=
lected
> >> in the test, as is that variation of what I wrote up.)
> >>=20
> >> Either way, test and patch work in 5_3.
> >=20
> > Doesn't this functionality confuse matters?
> >=20
> > If this patch is added, is there now no difference between instanceof
> > and is_subclass_of(). If this is the case my question is then why do
> > we have two methods to do the same thing?
> >=20
> > I thought instanceof was for parent classes + interfaces.. and
> > is_subclass_of() was just for parent classes.
>=20
> instanceof is a language construct and only operates on object instances.
>=20
> David
>=20
>=20

plus there is a difference if $a is a User is_subclass_of($a, 'User') retur=
ns false, $a instanceof User returns true.