How can the pdf->Output() function be used to upload a newly created PDF directly to the server in PHP?

To upload a newly created PDF directly to the server in PHP using the pdf->Output() function, you can first generate the PDF content using a library like TCPDF or FPDF. Then, instead of outputting the PDF to the browser, you can capture the output using ob_get_contents() and save it to a file on the server using file_put_contents().

// Generate PDF content using TCPDF or FPDF
$pdf = new TCPDF();
$pdf->AddPage();
$pdf->SetFont('Arial', 'B', 16);
$pdf->Cell(40, 10, 'Hello World!');

// Capture the output
$pdfContent = $pdf->Output('example.pdf', 'S');

// Save the PDF to the server
file_put_contents('path/to/save/example.pdf', $pdfContent);