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Date: Tue, 04 Jan 2005 17:24:06 -0800
To: Johannes Schlueter <johannes@php.net>,internals@lists.php.net,
	Jochem Maas <jochem@iamjochem.com>
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Subject: Re: [PHP-DEV] Re: CONSTANT names...
From: andi@zend.com (Andi Gutmans)

There are plenty of such examples in many languages. As Johannes mentions, 
some ppl might even be "abusing" it already :)
Anyway, I don't think adding necessary checks for such things, and slowing 
define() down (even if it's negligible) is warranted in such cases.

Andi

At 12:29 AM 1/5/2005 +0100, Johannes Schlueter wrote:
>Hi Jochem,
>
>you can get the valu of that constant with the constant() function and use
>such a constant with defined() so forbidding this would at least be a BC
>break.
>btw. the same goes for reserved words so define('echo', 42); is valid too
>but "echo echo;" doesn't work :-)
>
>johannes
>
>Jochem Maas wrote:
>
> > hi guys,
> >
> > I was mucking around and noticed the following:
> >
> > define("404_SKIP", 1);
> >
> > does not give an error and you can successfully get the value of the
> > constant by doing:
> >
> > constant("404_SKIP");
> >
> > where as doing:
> >
> > echo 404_SKIP;
> >
> > gives an error.
> > as I understand it, i.e. what the docs say, is that the following regexp
> >   expresses valid starting chars for the name of a constant (the same
> > going for vars):
> >
> > /^[a-zA-Z_\x7f-\xff]/
> >
> > so pretty minor thing here but I expected to see the define() throw a
> > (fatal?) error, rather than letting me go on.
> >
> > kind regards,
> > Jochem
>
>--
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