public function getTotal()
    {
        $total = $this->SubTotal + $this->TaxTotal;

        $this->extend("updateTotal", $total);
        
        return $total;
    }
public function getTotal()
    {
        $total = $this->SubTotal + $this->TaxTotal;

        $this->extend("updateTotal", $total);
        
        return $total;
    }
public function getTotal ( ) { $ total = $ this -> SubTotal + $ this -> TaxTotal ; $ this -> extend ( "updateTotal" , $ total ) ; return $ total ; }
Total value of order

@return float
Total value of order