Re: GUID or any other unique IDs
| From: | Jasper Bryant-Greene | Date: | Tue, 25 Oct 2005 09:12:06 +0000 |
| Subject: | Re: GUID or any other unique IDs | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-224613@lists.php.net to get a copy of this message | ||
On Tue, 2005-10-25 at 13:01 +0400, Denis Gerasimov wrote:
> I am in a need of GUID generator but it seems that PHP doesn't have this as
> a built-in feature.
>
> I looked at http://pear.php.net
> <http://pear.php.net/> and
> http://pecl.php.net
> <http://pecl.php.net/> but found nothing suitable
> there.
>
> I really need "true" unique identifiers - md5() hash is not OK because of
> the "birthday paradox".
>
> Can anyone recommend a way for solving this trouble?
I use:
$unique_id = sha1( uniqid( mt_rand(), true ) );
which should be very unique and suitable for most purposes.
--
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