thegroovetrain

<?php

function mix($color_1 = array(0, 0, 0), $color_2 = array(0, 0, 0), $weight = 0.5)
{
	$f = function($x) use ($weight) { return (1 - $weight) * $x; };
	$g = function($x) use ($weight) { return $weight * $x; };
	$h = function($x, $y) { return round($x + $y); };
	return array_map($h, array_map($f, $color_1), array_map($g, $color_2));
}