Re: "!" in front of a variable?
| From: | tg-php at gryffyndevelopment dot com | Date: | Fri, 17 Feb 2006 18:23:06 +0000 |
| Subject: | Re: "!" in front of a variable? | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-230657@lists.php.net to get a copy of this message | ||
Ooops.. I made the same mistake in my private reply.. hah..
= = = Original message = = =
I took me a little while to notice that it wasn't a function declaration :p
~It's just as Jay said, it's calling "function" with those arguments,
where '!$var2' extends to '!(bool)$var2' or "treat/cast this value as/to
boolean, and pass it's inverted value" or "NOT $var2".
Jay Blanchard wrote:
> [snip]
> I've got some code from someone else I've inherited and need to sort out
> some problems with. The programmer that wrote it originally was much
> better than I and programmed a little over my head to say the least.
>
> One function that I've come across that has 5 variables as input:
>
> function($var1,$var2,!$var2,$var3->cc,$var3->bcc);
>
> The question I have is on the 3rd input variable, what does the "!" in
> front of $var2 do to that variable?
> [/snip]
>
> Hmmm. Looks like a weird mistake, to be sure. If $var2 is boolean it should
> pass the opposite of its current state. Is $var2 a boolean? It is being
> passed twice here, once AS and once AS NOT.
--
Atentamente,
J. Rafael Salazar Maga~a
Innox - Innovaci~n Inteligente
Tel: +52 (33) 3615 5348 ext. 205 / 01 800 2-SOFTWARE
rsalazar@innox.com.mx
http://www.innox.com.mx
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