Fwd: Bitwise operation giving wrong results

---------- Forwarded message ----------
From: sean greenslade <zootboysean <at> gmail.com>
Date: Fri, Oct 31, 2008 at 11:22 PM
Subject: Re: [PHP] Bitwise operation giving wrong results
To: Yeti <yeti <at> myhich.com>

Cool, thanks. It worked. I didn't know you typeset PHP like that.

On Thu, Oct 30, 2008 at 3:42 AM, Yeti <yeti <at> myhich.com> wrote:

> Usually in PHP one does not take much care about the data types, but
> in this case you absoloodle have to.
> If you use bit operators on a character then its ascii number will be
> taken instead (how should a number based operation work with a
> string?)
>
> also if you pass on $_GET params directly into ay bitwise operation
> you might get some un-nice behaviour. So check them first.
>
> <?php
> $a = $b = false;
> if (is_numeric($_GET['b'].$_GET['a'])) {
>        $a = (int)$_GET['a'];
>        $b = (int)$_GET['b'];
>        echo $a & $b;
> }
> ?>
>

-- 
--Zootboy

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-- 
--Zootboy