aegypius

<?php
/**
 * UUID class
 *
 * The following class generates VALID RFC 4211 COMPLIANT
 * Universally Unique IDentifiers (UUID) version 3, 4 and 5.
 *
 * UUIDs generated validates using OSSP UUID Tool, and output
 * for named-based UUIDs are exactly the same. This is a pure
 * PHP implementation.

aegypius

<?php
function base62_encode($num){
    $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $base = 62;
    $result = '';

    while($num >= $base) {
        $r = $num%$base;
        $result = $chars[$r].$result;
        $num = $num/$base;