<?php
declare(strict_types=1);

$image = imagecreatetruecolor(2, 2);
imagealphablending($image, false);
$color = imagecolorallocate($image, 20, 80, 120);
imagesetpixel($image, 1, 1, $color);
$pixel = imagecolorsforindex($image, imagecolorat($image, 1, 1));
echo $pixel["red"], ",", $pixel["green"], ",", $pixel["blue"], "\n";
