titanscssc::op_add PHP Method

    protected function op_add($left, $right)
    {
        if ($strLeft = $this->coerceString($left)) {
            if ($right[0] == "string") {
                $right[1] = "";
            }
            $strLeft[2][] = $right;
            return $strLeft;
        }
        if ($strRight = $this->coerceString($right)) {
            if ($left[0] == "string") {
                $left[1] = "";
            }
            array_unshift($strRight[2], $left);
            return $strRight;
        }
    }