Posted by Marek Kilimajer on 06/29/05 16:45

Jason Barnett wrote:
> Actually, thanks for pointing out this function to me because I never
> even knew that it existed. You learn something new every day.
>
> I have to admit that a warning seems a little unusual given that an
> undefined variable would result in only an E_NOTICE. Especially since
> the default behavior for an undefined constant (anywhere except for this
> function) is an E_NOTICE. Seems like you may have found a bug to report.
>
> <?php
>
> /* Causes E_WARNING */
> echo constant(UNDEFINED_CONSTANT);

The above is wrong, use:
echo constant('UNDEFINED_CONSTANT');

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