Re: random letters and numbers
| From: | Steve Lawson | Date: | Wed, 25 Apr 2001 03:17:38 +0000 |
| Subject: | Re: random letters and numbers | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-50224@lists.php.net to get a copy of this message | ||
Sup,
I made this and have been using it for about 6 months without problem.
mt_rand() is 4 times faster than normal rand(), remember to use mt_srand()
to seed. The 8 in the while controls how long the $password will be...
$count = 0;
mt_srand( (double) microtime() * 1000000);
while( $count < 8 )
{
$randval = mt_rand(48 , 122);
$timeout++;
// currently allows 0-9 and a-z (lowercase), add 65-90 for uppercase
if(($randval > 47 && $randval < 58) || ($randval > 96 && $randval <
123))
{
$password .= chr($randval);
$count++;
}
}
SL.
----- Original Message -----
From: "Randy Johnson" <programmer@jennybug.com>
Cc: "Php-General" <php-general@lists.php.net>
Sent: Tuesday, April 24, 2001 12:10 AM
Subject: [PHP] random letters and numbers
> Is there a way to generate a random set of characters ranging from 8 to 12
> characters and numbers where it is crucial that the letters and numbers
are
> truly random because I need to create temporary files for people to
download
> information.
>
> Any links/suggestions would be greatly appreciated
>
> Thanks
>
> Randy
>
>
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