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Date: Thu, 16 Jun 2005 06:49:20 -0700
To: Michael Wallner <mike@php.net>,internals@lists.php.net
In-Reply-To: <CE.87.20931.36A90B24@pb1.pair.com>
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Subject: Re: [PHP-DEV] while we're at it (PHP-5.1 & instanceof)
From: andi@zend.com (Andi Gutmans)
References: <CE.87.20931.36A90B24@pb1.pair.com>

Seems to work...

At 11:15 PM 6/15/2005 +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
>
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