Unique Random ID

[dandixon]

Hi all i need to generate a 10 digit (at least) alphanumeric id when a customer submits a form, it has to be unique.

Is there an easy way of doing this or do i just use the uniqid function and then check against the database that it doesnt already exist

Regards

[blocblue]

Hi,

If you're storing the id in a database, why not use an auto-increment ID field?

R.

[muralibobby2015]

use random()

[raju_boini525]

see this link

[Chosen13]

Try doing this:

uniqid(mt_rand(), true);

[mschroeder]

If you want a truly universally unique identifier (UUID) then check out this post on the php.net site.
http://www.php.net/manual/en/function.uniqid.php#94959

MySQL 5.x also has support for UUID's
http://dev.mysql.com/doc/refman/5.0/en/miscellaneous-functions.html#function_uuid

There is also a UUID pecl extension.
http://pecl.php.net/package/uuid

[dandixon]

Thankyou for all the great suggestions their all perfect for what i want

[chintan@dani]

Hello Dendixon

Here is the code as per you requirement.
It is more than 10 digit but you can configure the loop..

<?php
for ($i=0; $i<7; $i++) {
    $d=rand(1,30)%2;
//    echo $d ? chr(rand(65,90)) : chr(rand(48,55)).rand(01,99).$d;
	$w=$d ? chr(rand(65,90)) : chr(rand(48,55)).rand(01,99).$d;
	echo $w;
}
?>