How can external PDF packages be properly integrated with PHP for creating PDF files?

To properly integrate external PDF packages with PHP for creating PDF files, you can use libraries such as TCPDF or FPDF. These libraries provide functions to easily generate PDF files by defining the layout, adding text, images, and other elements. By including the library files in your PHP script and utilizing their functions, you can efficiently create PDF files in your PHP application.

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

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

// Set document information
$pdf->SetCreator('Creator');
$pdf->SetAuthor('Author');
$pdf->SetTitle('Title');
$pdf->SetSubject('Subject');

// Add a page
$pdf->AddPage();

// Set font
$pdf->SetFont('dejavusans', '', 12);

// Add content
$pdf->Cell(0, 10, 'Hello World', 0, 1);

// Output PDF to browser
$pdf->Output('example.pdf', 'I');