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To: "Al Baker" <ajb732@comcast.net>, <internals@lists.php.net>
References: <41196A1D.6060808@velum.net> <200408112219.55268.dan@ostrowski.cc> <411AE454.4060808@akbkhome.com> <411AE970.2080908@velum.net> <1092304734.6882.2.camel@localhost>
Date: Thu, 12 Aug 2004 21:51:15 +1200
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Subject: Re: [PHP-DEV] is_a() vs. instanceof
From: jevon@jevon.org ("Jevon Wright")

What about:

if (get_class($obj) == "unloadedclass") {
    // blah
}

Jevon

----- Original Message ----- 
From: "Al Baker" <ajb732@comcast.net>
To: "Hans Lellelid" <hans@velum.net>
Cc: "Dan Ostrowski" <dan@ostrowski.cc>; <internals@lists.php.net>
Sent: Thursday, August 12, 2004 9:58 PM
Subject: Re: [PHP-DEV] is_a() vs. instanceof


> I agree, that's the exact behavior I would like as well and what most
> people would expect.
>
> Al
>
> On Wed, 2004-08-11 at 23:52 -0400, Hans Lellelid wrote:
> > Alan Knowles wrote:
> >
> > > I think he's referening to something like this (which is common in
pear):
> > >
> > > $x = $someobj->somemethod();
> > > if ($x instanceOf PEAR_Error) {
> > >   .......
> > > }
> > >
> > > while that code is redundant in the case of exceptions, it is still a
> > > valid situation.. that $x may be a valid return, and PEAR_Error was
> > > never loaded..
> >
> >
> > Yup, that's exactly what I'm talking about.
> >
> > I want to be able to do this:
> >
> > if ($db instanceof DBPostgres) {
> >    /// do something funky specific to Postgres
> > }
> >
> > If My DB adapter is DBMySQL, I don't want to load the DBPostgres adapter
> > just so I can test whether my object is of that type ...
> >
> > and checking first whether class_exists('DBPostgres') just seems kinda
> > kludgy & straying from the "problem domain" ... especially since $db
> > instanceof DBPostgres would *always* be false if DBPostgres isn't
loaded.
> >
> > Hans
> >
>
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