hex2rgb.output.filter.php

<?php
// by Bruno17 on slack
// Example: rgba([[+tv.node_activecolor:hextorgb]], 0.5)

$hexStr = $input;
$returnAsString = true;
$seperator = ',';

$hexStr = preg_replace("/[^0-9A-Fa-f]/", '', $hexStr); // Gets a proper hex string
$rgbArray = array();
if (strlen($hexStr) == 6) { //If a proper hex code, convert using bitwise operation. No overhead... faster
    $colorVal = hexdec($hexStr);
    $rgbArray['red'] = 0xFF & ($colorVal >> 0x10);
    $rgbArray['green'] = 0xFF & ($colorVal >> 0x8);
    $rgbArray['blue'] = 0xFF & $colorVal;
}
elseif (strlen($hexStr) == 3) { //if shorthand notation, need some string manipulations
    $rgbArray['red'] = hexdec(str_repeat(substr($hexStr, 0, 1), 2));
    $rgbArray['green'] = hexdec(str_repeat(substr($hexStr, 1, 1), 2));
    $rgbArray['blue'] = hexdec(str_repeat(substr($hexStr, 2, 1), 2));
}
else {
    return false; //Invalid hex color code
}
return $returnAsString ? implode($seperator, $rgbArray) : $rgbArray; // returns the rgb string or the associative array