Re: while we're at it (PHP-5.1 & instanceof)

http://www.akbkhome.com/blog.php/View/75/removing+that+stupid+is_a +warning..html You're not the only one ;) Regards Alan On Wed, 2005-06-15 at 23:15 +0200, Michael Wallner wrote: > I already complained about that issue several times on IRC > and now that it's time for PHP-5.1 to come, I'll just throw > this question/rant in... > > Using is_a() throws a notice (E_STRICT IIRC) in PHP5, which > should be fine, because it was deprecated in favour of the > instanceof operator. But there's quite an ugly problem with > the instnceof operator - it needs the class to be checked > already loaded, while is_a() didn't -- *and* instanceof > let the script _die_ if there's no such class. > > To replace > is_a($obj, 'ClassName') > calls one would need to write > class_exists('ClassName') && ($obj instanceof ClassName) > > The point is, that I don't see the point why is_a() has been > deprecated (and replaced) by an operator that doesn't provide > the same functionality and can even be harmful (with fatal errors). > > Regards, > Mike >