cesarmiquel

<?php

$im = imagecreatefrompng("vga-palette.png");
$sx = (int) 800 / 16;
$sy = (int) 800 / 16;
$ox = (int) ($sx / 2);
$oy = (int) ($sx / 2);
for($y = 0; $y < 16; $y++) {
    for($x = 0; $x < 16; $x++) {
        $rgb = imagecolorat($im, $sx*$x + $ox, $sy*$y + $oy);