How can PHP be used to customize the layout and functionality of a forum script?

To customize the layout and functionality of a forum script using PHP, you can modify the existing codebase to add new features, change the design, or enhance existing functionalities. This can be done by editing the PHP files that handle the forum's layout and functionality, such as templates, controllers, and models. By making changes to the PHP code, you can tailor the forum script to meet your specific requirements and create a unique user experience.

// Example PHP code snippet to customize the layout of a forum script
// Modify the template file to change the layout of the forum
// This example changes the color of the forum posts to blue

// Inside the forum template file
echo '<div style="color: blue;">' . $post['content'] . '</div>';