FPDF เปิดไฟล์ในbrowserไม่ขึ้นโชว์ แต่ขึ้นเป็นโค้ด php ที่เขียนแทน

<?php
header('Cache-Control: no-cache');
header('Pragma: no-cache');
header('Expires: 0');
include("database_connect.php");
include("translateamount.php");
require('fpdf181/fpdf.php');
define('FPDF_FONTPATH','fontTH/');
?>


<?
$result = mysqli_query($dbc, "SELECT * FROM Receipt WHERE ReceiptID = '".$_REQUEST['id']."' ");
$row = mysqli_fetch_array($result);

$x = new hk_baht( $b=$row['GrandTotal'] );
$pdf=new FPDF( 'L' , 'mm' , 'A4' );
$pdf->SetMargins( 48,60,10 );
$pdf->AddFont('angsana','','angsa.php');
$pdf->AddFont('angsana','B','angsab.php');
$pdf->AddFont('angsana','I','angsai.php');
$pdf->AddFont('angsana','BI','angsaz.php');

$pdf->AddPage();

//กำหนดฟอนต์ Arial ตัวหนา ขนาด 16
//จะอธิบายคำสั่งนี้อย่างละเอียด ในบทว่าด้วยเรื่อง กำหนดฟ้อนต์
$pdf->SetFont('angsana','',20);
//เยื้องจากขอบกระดาษด้านซ้าย 10 มม.
//เยื้องจากขอบกระดาษด้านบน 10 มม.

$pdf->Image('logofitness.png',230,5,35,0,'');
$pdf->Text( 25 , 10 , 'X Fitness CO., LTD');
$pdf->Text( 25 , 15 , '254 Baansuan Sukhumvit Village, Soi Onnuch 46,');
$pdf->Text( 25 , 20 , 'Suanluang, Sukhumvit 77, Bangkok 10250');
$pdf->Text( 25 , 26 , 'Tel. 027213733');
$pdf->Text( 200 , 50 , iconv( 'UTF-8','cp874' , 'No:' ));
$pdf->Text( 220 , 50 , iconv( 'UTF-8','cp874', $row['ReceiptID']));
$pdf->Cell(0.02,100,'',1,0,'C',0);
$pdf->Text( 60 ,  55 , iconv( 'UTF-8','cp874' , 'Receipt / ใบรับเงิน' ));
$pdf->Text( 200 , 55 , iconv( 'UTF-8','cp874' , 'Date:' ));
$pdf->Text( 220 , 55 , iconv( 'UTF-8','cp874' , $row['Date']));
$pdf->Cell( 170 ,  10 , iconv('UTF-8' ,'cp874' ,'ชื่อลูกค้า / Customer Name: '),1,0,'L',0);
$pdf->Text( 115 , 67 , iconv( 'UTF-8','cp874' , $row['CustomerName']) ,1,0,'',0);
//$pdf->Text( 225, 66 , 'Amount');
$pdf->Text( 218 , 69 , iconv( 'UTF-8','cp874' , '_____________'));
$pdf->Cell(30,100,'',1,0,'C',0);
$pdf->Cell(0,100,'',0,1,'C',0);//เว้นบรรทัด
$pdf->Text( 50 , 80 , iconv( 'UTF-8','cp874' , 'Description / คำอธิบาย:'));
$pdf->SetXY($x +60, $y +85);
$pdf->MultiCell( 0 , 7 , iconv( 'UTF-8', 'cp874', $row['Description'] ) , 'C' );
//$pdf->Text( 60 , 90 , iconv( 'UTF-8','cp874' , $row['Description']));
$pdf->Text( 50 , 157 , iconv( 'UTF-8','cp874' , 'Payment Type:'));
$pdf->Text( 85 , 157 , iconv( 'UTF-8','cp874' , $row['PaymentType']));
$pdf->Text( 48 , 134 , iconv( 'UTF-8','cp874' , '______________________________________________________________________________________'));
$pdf->Text( 193 , 141 , iconv( 'UTF-8','cp874' , 'Total:'));
$pdf->Text( 229 , 141 , iconv( 'UTF-8','cp874' , $row['Total']) ,1,0,'',0);
$pdf->Text( 218 , 142 , iconv( 'UTF-8','cp874' , '_____________'));
$pdf->Text( 193 , 149 , iconv( 'UTF-8','cp874' , 'VAT 7%:'));
$pdf->Text( 229 , 149 , iconv( 'UTF-8','cp874' , $row['VAT']) ,1,0,'',0);
$pdf->Text( 218 , 151 , iconv( 'UTF-8','cp874' , '_____________'));
$pdf->Text( 193 , 157 , iconv( 'UTF-8','cp874' , 'Grand total:'));
$pdf->Text( 229 , 157 , iconv( 'UTF-8','cp874' , $row['GrandTotal']) ,1,0,'',0);
$pdf->Text( 100 , 172 , iconv( 'UTF-8','cp874' , $x->result));
$pdf->SetXY($x +47, $y +160);
$pdf->Cell(200,20,iconv( 'UTF-8','cp874' ,'จำนวนเงินเป็นตัวอักษร:'),1,1,'L',0);
$pdf->Text( 185 , 167 , iconv( 'UTF-8','cp874' , 'Staff Name:'));
$pdf->Text( 185 , 177 , iconv( 'UTF-8','cp874' , 'Sale Name:'));
$pdf->Text( 215 , 167 , iconv( 'UTF-8','cp874' , $row['StaffName']) ,1,0,'',0);
$pdf->Text( 215 , 177 , iconv( 'UTF-8','cp874' , $row['SaleName']) ,1,0,'',0);


//$pdf->Text( 15 , 31 , $row['CustomerName']);

$pdf->Output();


?>