How can PHP be utilized to customize Joomla templates effectively?

To customize Joomla templates effectively using PHP, you can utilize template overrides to modify the layout and functionality of specific elements. This involves creating PHP files in the template's override folder to override default Joomla behavior and styling.

<?php
// Example of a template override for modifying the layout of Joomla article titles
function mod_article_title($title) {
    return '<h2>' . $title . '</h2>';
}
?>