How can PHP developers utilize CSS classes to style content and improve the overall layout of their web pages?

PHP developers can utilize CSS classes by adding them to HTML elements within their PHP code. By assigning specific CSS classes to elements, developers can style content, improve the layout, and enhance the overall design of their web pages. This allows for easier maintenance and customization of styles across multiple pages.

<?php
echo '<div class="container">';
echo '<p class="text-center">This is some text styled with CSS classes.</p>';
echo '</div>';
?>