- base_convert: documentation ( source)
- time: documentation ( source)
- base64_encode: documentation ( source)
- str_pad: documentation ( source)
<?php
$t = time();
$l = 10;
foreach(array(2,8,10,16,24,32) as $base)
echo str_pad($base, 2).' '.str_pad(base_convert($t, 10, $base), $l)."\n";
echo str_pad(64, 2).' '.str_pad(base64_encode($t), $l)."\n";