How can PHP developers efficiently integrate PDF portfolio functionality into their projects?

To efficiently integrate PDF portfolio functionality into PHP projects, developers can use libraries like TCPDF or FPDF to generate PDF files. These libraries provide functions to create PDF portfolios by combining multiple PDF files into a single document. By utilizing these libraries, developers can easily incorporate PDF portfolio functionality into their projects.

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

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

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

$pdf->setSourceFile('file2.pdf');
$tplIdx2 = $pdf->importPage(1);
$pdf->AddPage();
$pdf->useTemplate($tplIdx2);

// Output the PDF portfolio
$pdf->Output('portfolio.pdf', 'I');