PHP: convert HEX colour to RGB

gistfile1.php

<?php
// convert 'theme settings' hex values to rgb
function hex2rgb($hex) {
	$hex = str_replace("#", "", $hex);

    if(strlen($hex) == 3) {
        $r = hexdec(substr($hex,0,1).substr($hex,0,1));
        $g = hexdec(substr($hex,1,1).substr($hex,1,1));
        $b = hexdec(substr($hex,2,1).substr($hex,2,1));
    } else {
        $r = hexdec(substr($hex,0,2));
        $g = hexdec(substr($hex,2,2));
        $b = hexdec(substr($hex,4,2));
    }
    $rgb = array($r, $g, $b);
    //return implode(",", $rgb); // returns the rgb values separated by commas
    //return $rgb; // returns an array with the rgb values
}

$rgb = hex2rgb("#cc0");
print_r($rgb);