In what ways can the functionality of a PHP forum be enhanced by leveraging existing forum software code or modifying existing features for a customized user experience?

To enhance the functionality of a PHP forum, you can leverage existing forum software code or modify existing features to create a customized user experience. This can include adding new features, improving user interface design, integrating with third-party services, or optimizing performance.

// Example code snippet for adding a new feature to a PHP forum
function custom_feature_function() {
    // Add custom functionality here
}

add_action('init', 'custom_feature_function');