- array_reverse: documentation ( source)
- implode: documentation ( source)
- explode: documentation ( source)
- strtoupper: documentation ( source)
- dechex: documentation ( source)
- wordwrap: documentation ( source)
<?php
$BaseID = '1234567890';
$BaseIDHex = dechex($BaseID);
echo $v = implode(' ',array_reverse(explode(' ',strtoupper(wordwrap($BaseIDHex, 2, " ", true)))));