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@ 2014-05-14T17:10:45Z

<?php

function generate_GUID() {
        $uuid = md5(uniqid(rand(), true));
        $guid = substr($uuid,0,8)."-".
                substr($uuid,8,4)."-".
                substr($uuid,12,4)."-".
                substr($uuid,16,4)."-".
                substr($uuid,20,12);
        return $guid;
    }
echo strtoupper(generate_GUID());

Output
Performance
VLD
References
Branches

substr: documentation ( source)
uniqid: documentation ( source)
strtoupper: documentation ( source)
rand: documentation ( source)
md5: documentation ( source)

preferences:dark modelive preview

35.04 ms | 402 KiB | 5 Q