How to generate a UUID in this format?

Question

Possible Duplicate:
PHP function to generate v4 UUID

I've been looking all over the web for this. Im trying to make a UUID which will appear in this format: 32321-65631-43546-54542 (the numbers of course, will vary) I know how to make a uniqid id, but dont know where to start with this. Anybody know how this can be accomplished?

Should this “UUID” comply with some [specific requirements](http://en.wikipedia.org/wiki/Universally_unique_identifier)? — Gumbo, Jun 16 '11 at 17:15
no, i just want it to generate a 4 sectioned id with 5 numbers in each section. — user719813, Jun 16 '11 at 17:20
I don't see how my answer below can't do this? Generate 4 5 digit numbers and switch the x's to d's if you are only going to be used decimals rather than hex. — Colin, Jun 16 '11 at 17:29
You can use either one of these generators to easily create UUID or GUIDs (basically same thing): [Online UUID Generator](http://www.onlineuuidgenerator.com) [Online GUID Generator](http://www.onlineguidgenerator.com) — Dave, May 08 '12 at 18:21

score 3 · Answer 1 · edited May 23 '17 at 12:25

3

You can find your answer here:

PHP function to generate v4 UUID

and here

http://php.net/manual/en/function.uniqid.php

Second Edit

Using the answer in the first link:

$uuid = sprintf('%05d-%05d-%05d-%05d',
  mt_rand( 0, 99999),
  mt_rand( 0, 99999),
  mt_rand( 0, 99999),
  mt_rand( 0, 99999)
 );

Bear in mind this is not a 'proper' UUID, as it is not going to be Universally unique (among other things). This is really just a random 20 digit hyphenated ID.

edited May 23 '17 at 12:25

Community

1
1

answered Jun 16 '11 at 17:15

Colin

2,001
13
28

Neither of these approaches provide the right format, as is. – Lightness Races in Orbit Jun 16 '11 at 17:17
A bit harsh.. It would take *very* little effort to change the function in the linked answer to generate the format specified. – Colin Jun 16 '11 at 17:20
sorry, not what im looking for. – user719813 Jun 16 '11 at 17:21
Could you perhaps explain how you generate the UUID/numbers in the UUID then? – Colin Jun 16 '11 at 17:26
@user796855, if this isn't what you are looking for, then you better clarify your question, as this answer seems fine to me. – Brad Jun 16 '11 at 17:27
1

The answer currently reads "just string some number together four times", which does not help the OP to generate a reliably _unique_ UUID in the requested format. In retrospect I have removed my downvote, but I won't upvote it... – Lightness Races in Orbit Jun 16 '11 at 17:28
@Colin: If it's "_very_ little effort", perhaps you can do that in your answer, then? :) – Lightness Races in Orbit Jun 16 '11 at 17:30

score 3 · Answer 2 · answered Jun 16 '11 at 17:41

If I understand you question correctly: You have your number (...I know how to make a uniqid id...), but are searching for a way to format it properly, try this:

$number = '32321656314354654542';
echo implode('-', str_split($number, 5));

Output:

32321-65631-43546-54542

How to generate a UUID in this format?

2 Answers2