What are the limitations of editing existing PDF files using fpdf in PHP?

Editing existing PDF files using fpdf in PHP is limited because fpdf is primarily designed for creating new PDF files, not for editing existing ones. To overcome this limitation, one possible solution is to use a different library like TCPDF or FPDI that supports editing existing PDF files. 

// Example using TCPDF to edit an existing PDF file
require_once('tcpdf.php');

$pdf = new TCPDF();
$pdf->setSourceFile('existing_file.pdf');
$page = $pdf->importPage(1);
$pdf->AddPage();
$pdf->useTemplate($page, 0, 0);

// Add your editing code here

$pdf->Output('edited_file.pdf', 'F');

Keywords

fpdf PDF files limitations editing PHP

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