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Date: Fri, 10 Jun 2011 16:54:54 +0200
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To: Derick Rethans <derick@php.net>
Cc: Hannes Landeholm <landeholm@gmail.com>, 
	PHP Developers Mailing List <internals@lists.php.net>
Content-Type: text/plain; charset=ISO-8859-1
Subject: Re: [PHP-DEV] 32 bit / 64 bit integer confusion
From: pierre.php@gmail.com (Pierre Joye)

hi,

On Fri, Jun 10, 2011 at 4:47 PM, Derick Rethans <derick@php.net> wrote:
> On Fri, 10 Jun 2011, Hannes Landeholm wrote:
>
>> What are the reasoning behind this? I think the PHP integer size
>> should be changed to always be 64 bit - independent of the platform. I
>> have stumbled on this annoying inconsistency several times the last
>> month.
>
> I agree that that should be the same. But sadly, Windows uses a
> different integer size model than almost everything else modern.
> Where Linux and Mac and other unices use 8 bytes for an "int", Windows
> uses 4 bytes (http://en.wikipedia.org/wiki/LP64#Specific_C-language_data_models).
> Because PHP internally uses "int" for its integer type, on Windows
> that's still only 32 bit.

The sad part is not that windows uses a consistent type size across
architecture but that linux and gcc considers that a type could be
whatever the architecture uses. Hence why stdint.h was introduced and
should be used instead of the long/int.

> But yes, it would be awesome if PHP actually took care of this and uses
> 64 bit ints on 64 bit processors.

A type should be the same on all architecture, even more at the PHP
script level.

Cheers,
-- 
Pierre

@pierrejoye | http://blog.thepimp.net | http://www.libgd.org