titanscssc::getNormalizedNumbers PHP Method

    protected function getNormalizedNumbers($args)
    {
        $unit = null;
        $originalUnit = null;
        $numbers = array();
        foreach ($args as $key => $item) {
            if ('number' != $item[0]) {
                $this->throwError("%s is not a number", $item[0]);
            }
            $number = $this->normalizeNumber($item);
            if (null === $unit) {
                $unit = $number[2];
                $originalUnit = $item[2];
            } elseif ($unit !== $number[2]) {
                $this->throwError('Incompatible units: "%s" and "%s".', $originalUnit, $item[2]);
            }
            $numbers[$key] = $number;
        }
        return $numbers;
    }