How can HTML be disabled in user descriptions to prevent loading frames or other elements on a PHP website?

To prevent users from inserting HTML code in their descriptions that could potentially load frames or other elements on a PHP website, you can use the `strip_tags()` function in PHP. This function removes all HTML and PHP tags from a string, ensuring that only plain text is displayed in the user descriptions.

$user_description = "<p>This is a user description with <iframe src='https://example.com'></iframe></p>";
$clean_description = strip_tags($user_description);
echo $clean_description;