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Posted by "Chris Knipe" on 10/21/05 23:07
Aha :)
Thanks.
> -----Original Message-----
> From: Jasper Bryant-Greene [mailto:jasper@album.co.nz]
> Sent: 21 October 2005 22:04
> To: savage@savage.za.org
> Cc: php-general@lists.php.net
> Subject: Re: [PHP] Declaring vars as INT ?
>
> On Fri, 2005-10-21 at 21:39 +0200, Chris Knipe wrote:
> > Function DoSomething($Blah) {
> > $Blah = (int) $Blah;
> > return $Blah
> > }
> >
> > $Blah, cannot be larger than 2147483647, and sometimes, I
> get negative
> > integers back from the above function.
> >
> > This is with PHP 4.4.0 on FreeBSD 5.4-STABLE. Can anyone
> else perhaps
> > confirm this, and if it is indeed true, is this a bug, or a
> limitation
> > somewhere on PHP? Any other ways to confirm that *large*
> numbers, are
> > indeed integers? I'm working with numbers in the form of
> yyyymmddsss
> > (20051025001 for today for example)
>
> It's not a PHP bug. I'm guessing you're on a 32-bit platform.
> 2147483647 is the maximum length of a signed integer on a
> 32-bit platform, and PHP doesn't do unsigned integers.
>
> A date in the form of yyyymmddsss etc. isn't really a number,
> so if it was me I'd probably treat it as a string. If you
> really *have* to treat it as a number, then use float and get
> all the precision errors that come with floating-point, or
> use binary coded decimal or another arbitrary precision system.
>
> --
> Jasper Bryant-Greene
> General Manager
> Album Limited
>
> e: jasper@album.co.nz
> w: http://www.album.co.nz/
> p: 0800 4 ALBUM (0800 425 286) or +64 21 232 3303
> a: PO Box 579, Christchurch 8015, New Zealand
>
>
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