For Frankie about his base_26 problem.

base_26.php

<?php
function base_26($num)
{
    $alpha = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z');

    // Get the character
    $i = $num%26;

    // Get the rest of the characters "power/base" math
    $num = ($num - $i)/26;
    // Recurse
    if ($num > 0)
    {
        //minus 1 because the index is 0
        return base_26($num-1) . $alpha[$i];
    }
    return $alpha[$i];
}

for ($i = 0; $i<1000; $i++)
{
    echo $i.": ";
    echo base_26($i);
    echo "\n";
}