<?php
declare(strict_types=1);

$image = imagecreate(2, 2);
$color = imagecolorallocatealpha($image, 20, 80, 120, 64);
var_dump($color === false);
$parts = imagecolorsforindex($image, $color);
echo $parts["red"], ",", $parts["green"], ",", $parts["blue"], ",", $parts["alpha"], "\n";
