What are the best practices for formatting tables and links in PHP to ensure proper display and functionality in a navigation menu?

When formatting tables and links in PHP for a navigation menu, it's important to use proper HTML markup and CSS styling to ensure proper display and functionality. Tables should be used sparingly for layout purposes, with CSS being the preferred method for styling. Links should be properly formatted with the appropriate anchor tags and attributes to ensure they function correctly.

<?php
// Sample PHP code for creating a navigation menu with links

echo '<ul>';
echo '<li><a href="index.php">Home</a></li>';
echo '<li><a href="about.php">About</a></li>';
echo '<li><a href="services.php">Services</a></li>';
echo '</ul>';
?>