Steve Smith Steve Smith - 1 month ago 22
PHP Question

Using fpdf to modify existing pdf in php

I have a bank of pdfs on my server which when downloaded need text appended to every page. I am using fpdf to try and open the file, append the text to each page, close the file and serve to the browser.

$pdf = new FPDI();

$pdf->setSourceFile($filename);
// import page 1
$tplIdx = $pdf->importPage(1);
//use the imported page and place it at point 0,0; calculate width and height
//automaticallay and ajust the page size to the size of the imported page
$pdf->useTemplate($tplIdx, 0, 0, 0, 0, true);

// now write some text above the imported page
$pdf->SetFont('Arial', '', '13');
$pdf->SetTextColor(0,0,0);
//set position in pdf document
$pdf->SetXY(20, 20);
//first parameter defines the line height
$pdf->Write(0, 'gift code');
//force the browser to download the output
$pdf->Output('gift_coupon_generated.pdf', 'D');

header("location: ".$filename);


At the minute this just tries to put some text anywhere on the pdf and save it but I get the error

FPDF error: You have to add a page first!


If I can get it to do this I then need it to append the text to every page in the document rather than just 1, not sure how to do this having read the documentation

GBD GBD
Answer

Try following

require_once('fpdf.php');
require_once('fpdi.php');

$pdf =& new FPDI();
$pdf->AddPage();

Use this page as template, then

$pdf->setSourceFile($filename); 
// import page 1 
$tplIdx = $pdf->importPage(1); 
//use the imported page and place it at point 0,0; calculate width and height
//automaticallay and ajust the page size to the size of the imported page 
$pdf->useTemplate($tplIdx, 0, 0, 0, 0, true); 

Let me know if you have any errors

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