What are some best practices for displaying variables from a TXT file on an HTML page using PHP and later converting them into a PDF using fpdf?

To display variables from a TXT file on an HTML page using PHP, you can read the contents of the TXT file, extract the variables, and then echo them onto the HTML page. To convert these variables into a PDF using fpdf, you can create a new PDF document, add the variables as text to the PDF, and then output the PDF file.

// Read the contents of the TXT file
$txt_file = file_get_contents('variables.txt');

// Extract variables from the TXT file
$variables = explode("\n", $txt_file);

// Display variables on HTML page
foreach ($variables as $variable) {
    echo $variable . '<br>';
}

// Create a new PDF document
require('fpdf.php');
$pdf = new FPDF();
$pdf->AddPage();

// Add variables as text to the PDF
foreach ($variables as $variable) {
    $pdf->Cell(0, 10, $variable, 0, 1);
}

// Output the PDF file
$pdf->Output('variables.pdf', 'F');