Are there any specific PHP libraries or functions recommended for merging PDF files?

Merging PDF files in PHP can be achieved by using libraries such as TCPDF or FPDI. These libraries provide functions to read existing PDF files and merge them into a single PDF document. By utilizing these libraries, you can easily combine multiple PDF files into one. 

// Include the TCPDF library
require_once('tcpdf/tcpdf.php');

// Create new TCPDF object
$pdf = new TCPDF();

// Add the first PDF file
$pdf->setSourceFile('file1.pdf');
$tplIdx1 = $pdf->importPage(1);
$pdf->AddPage();
$pdf->useTemplate($tplIdx1);

// Add the second PDF file
$pdf->setSourceFile('file2.pdf');
$tplIdx2 = $pdf->importPage(1);
$pdf->AddPage();
$pdf->useTemplate($tplIdx2);

// Output the merged PDF
$pdf->Output('merged_file.pdf', 'F');

Keywords

PHP libraries functions merge PDF files

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