What is the best way to integrate multiple PDF files into a single PDF using PHP?

To integrate multiple PDF files into a single PDF using PHP, you can use a library like TCPDF or FPDI. These libraries allow you to import existing PDF files and merge them into a single PDF document. You can loop through each PDF file, import it into the main PDF document, and then output the final merged PDF. 

require_once('tcpdf/tcpdf.php');
require_once('fpdi/fpdi.php');

// Initialize TCPDF
$pdf = new TCPDF();

// Initialize FPDI
$fpdi = new FPDI();

// Add a page for the first PDF
$fpdi->AddPage();
$fpdi->setSourceFile('file1.pdf');
$tplIdx = $fpdi->importPage(1);
$fpdi->useTemplate($tplIdx);

// Add a page for the second PDF
$fpdi->AddPage();
$fpdi->setSourceFile('file2.pdf');
$tplIdx = $fpdi->importPage(1);
$fpdi->useTemplate($tplIdx);

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

Keywords

PHP PDF integration multiple files single PDF

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