Compass::compassCompact PHP Method

    public static function compassCompact()
    {
        $sep = ', ';
        $args = func_get_args();
        $list = array();
        // remove blank entries
        // append non-blank entries to list
        foreach ($args as $k => $v) {
            if (is_object($v)) {
                $string = isset($v->value) ? $v->value : false;
            } else {
                $string = (string) $v;
            }
            if (empty($string) || $string == 'false') {
                unset($args[$k]);
                continue;
            }
            $list[] = $string;
        }
        return new SassString(implode($sep, $list));
    }