26 October 2017 · 1 min read

How to Generate a UUID in PHP 7

Here is a little snippet for generating a UUID in PHP 7

function uuid(){
        $data = random_bytes(16);
        $data[6] = chr(ord($data[6]) & 0x0f | 0x40);
        $data[8] = chr(ord($data[8]) & 0x3f | 0x80);
        return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
}

You can use it by calling the function

<?php echo uuid(); ?>

4 comments

sanjivm43 20 Oct 2018

generates
PHP Fatal error: Call to undefined function random_bytes() in
Sean 20 Oct 2018

I should have said that this is for >=PHP7 .. The random_bytes function is available using that version.
Aalfiann 30 Dec 2018

is this follow the RFC 4122 standard? then which one v1, v3, v4 or v5?
Sdsdssd 2 Jun 2019

sasss