there isnt much to it.. you could make things neater by using modrewrite to make the url something like http://www.galeries.com/sexyhotteens/<refcode>/
you could also put in a shaving feature
Code:
<?php
srand(time());
$random = (rand()%2);
if ($random != 1 || $random !=0)
{
$vercode ='00000';
}
?>