<table>
<?php
//This is our first loop, changing the R value
$r=0;
while ($r <= 15)
{
echo "<tr>"; //Our second loop (G value) occurs 6 times for ever R value, 36 times
$g=0;
while ($g <= 15)
{
echo "<tr>";
//Our third loop (B value) occurs 6 times for ever G value, or 216 times
$b=0;
while ($b <= 15)
{
//Here we actually generate the color blocks
$background = dechex($r) . dechex($r) . dechex($g) .dechex($g) . dechex($b) . dechex ($b);
echo "<td bgcolor=\"#$background\">#$background</td>";
//At the end of each loop we add 3
$b = $b+3;
}
$g = $g+3;
}
$r = $r+3;
}
?>
</table>
