How can one ensure that the script for using a truetype font in a PDF document functions correctly in PHP?

To ensure that the script for using a truetype font in a PDF document functions correctly in PHP, you need to make sure that the font file is properly embedded and referenced in the PDF document. This can be done by specifying the font file path, font size, font color, and other relevant parameters in the PDF generation script.

<?php
require('fpdf.php');

$pdf = new FPDF();
$pdf->AddPage();

// Add a truetype font
$pdf->AddFont('Arial', '', 'arial.ttf', true);
$pdf->SetFont('Arial', '', 12);

$pdf->Cell(0, 10, 'Hello World!', 0, 1);

$pdf->Output();
?>