How can one ensure that the included text file is properly displayed and integrated within the HTML structure of the PHP script?

To ensure that the included text file is properly displayed and integrated within the HTML structure of the PHP script, you can use the `file_get_contents()` function to read the contents of the text file and then echo it within the HTML structure.

<?php
$text_file = 'your_text_file.txt';
$text_content = file_get_contents($text_file);
?>

<!DOCTYPE html>
<html>
<head>
    <title>Display Text File</title>
</head>
<body>
    <div>
        <?php echo $text_content; ?>
    </div>
</body>
</html>