<?php
declare(strict_types=1);

$image = imagecreate(2, 2);
$red = imagecolorallocate($image, 255, 0, 0);
$blue = imagecolorallocate($image, 0, 0, 255);
$index = imagecolorclosest($image, 255, 0, 0);
echo $index, "\n";
