fpdf problemer

Jeg prøver at udtrække data fra MySql og ind i pdf filen, men den laver alle mulige mærkelige tegn, hvad kan der være galt?

<?php
require('../fpdf.php');
include('connect.php');


$result=mysql_query("select id from bestillinger ORDER BY id");
while($row = mysql_fetch_array($result))
{
    $code = $row["id"];
}
mysql_close();

class PDF extends FPDF
{
//Page header
function Header()
{
    //Logo
    $this->Image('logo_pb.png',10,8,33);
    //Arial bold 15
    $this->SetFont('Arial','B',15);
    //Move to the right
    $this->Cell(150);
    //Title
    $this->Cell(30,10,'code');
    //Line break
    $this->Ln(20);
}

//Page footer
function Footer()
{
    //Position at 1.5 cm from bottom
    $this->SetY(-15);
    //Arial italic 8
    $this->SetFont('Arial','I',8);
    //Page number
    $this->Cell(0,10,'Page '.$this->PageNo().'/{nb}',0,0,'C');
}
}

//Instanciation of inherited class
$pdf=new PDF();
$pdf->AliasNbPages();
$pdf->AddPage();
$pdf->SetFont('Times','',12);
$pdf->Cell(0,10,'Printing line number ');
$pdf->Output();
?>