What are the limitations of using TCPDF and FPDF for editing PDF files in PHP?

Both TCPDF and FPDF have limitations when it comes to editing existing PDF files in PHP. These libraries are primarily designed for creating new PDF files rather than modifying existing ones. To overcome this limitation, you can use a library like FPDI (FPDF) or TCPDI (TCPDF) which allows you to import existing PDF files and modify them as needed. 

// Example code using FPDI with FPDF to edit existing PDF files
require_once('fpdf/fpdf.php');
require_once('fpdi/fpdi.php');

$pdf = new FPDI();
$pdf->AddPage();
$pdf->setSourceFile('existing_file.pdf');
$tplIdx = $pdf->importPage(1);
$pdf->useTemplate($tplIdx, 10, 10, 100);

$pdf->SetFont('Arial', '', 12);
$pdf->SetTextColor(255, 0, 0);
$pdf->SetXY(10, 50);
$pdf->Write(0, 'Edited content');

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

Keywords

TCPDF FPDF PDF editing limitations PHP

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