Is using iframes to display a guestbook on a webpage considered a good practice in terms of web development and user experience?

Using iframes to display a guestbook on a webpage is generally not considered a good practice in terms of web development and user experience. It can lead to issues with responsiveness, SEO, and accessibility. Instead, it is recommended to use server-side scripting languages like PHP to dynamically generate and display the guestbook content directly on the webpage.

<?php
// Code to display guestbook entries using PHP
$guestbookEntries = array(
    "Entry 1",
    "Entry 2",
    "Entry 3"
);

echo "<ul>";
foreach ($guestbookEntries as $entry) {
    echo "<li>$entry</li>";
}
echo "</ul>";
?>