How can CSS classes be utilized in PHP to enhance code readability and maintainability?

Utilizing CSS classes in PHP can enhance code readability and maintainability by separating the styling concerns from the PHP logic. This allows for easier maintenance and updates to the styling without affecting the PHP code. By applying CSS classes to HTML elements generated by PHP, developers can create a more organized and structured codebase.

<?php
// PHP logic to generate HTML content
echo '<div class="container">';
echo '<p class="text-primary">Hello, World!</p>';
echo '</div>';
?>