Quoting Jason Wong <[EMAIL PROTECTED]>:
> On Thursday 21 November 2002 01:34, Ryan Gallagher wrote:
>
> > Try:
> >
> > if( ( $_GET['sc'] != 2 ) OR ( $_GET['sc'] != 8 ) ){
> > /*
> > * Do Foo provided sc is anything but a 2 or 8
> > */
> > do foo;
> > }
> >
> > Assuming of course that you meant to exclude cases of 2 or 8. It's a bit
> > hard to tell what your intended event for 8 is.
>
> The above would not have the intended effect. My boolean maths is extremely
> rusty but I think it is equivalent to saying:
>
> if (!($_GET['sc'] == 2 AND $_GET['sc'] == 8))
>
> Which means your code above is *always* TRUE, so do foo is always executed!
>
> In any case you can easily test it by mentally plugging in values 1 to 8 for
>
> $_GET['sc'] and evaluating it for yourself.
I'll shut up now, teaches me to reply to this list too early in the morning and
without coffee. ;-)
BTW, what I posted would ALWAYS execute, because of _OR_. If it's 2, then it's
not 8, so one of the two sides would be true.
Here's a corrected one:
if( ( $_GET['sc'] != 2 ) AND ( $_GET['sc'] != 8 ) ){
/*
* Do Foo provided sc is anything but a 2 or 8
*/
do foo;
}
--
Ryan T. Gallagher
[EMAIL PROTECTED]
International Studies Abroad
http://www.studiesabroad.com
(512)480-8522
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