How can one implement a navigation bar that dynamically updates based on the user's location within a forum using PHP?

To implement a navigation bar that dynamically updates based on the user's location within a forum using PHP, you can create an array of navigation links with corresponding page URLs. Then, check the current page URL against the array to determine the active link and style it accordingly.

<?php
$navLinks = array(
    'Home' => 'index.php',
    'Forum' => 'forum.php',
    'Profile' => 'profile.php',
    'Settings' => 'settings.php'
);

$currentUrl = $_SERVER['REQUEST_URI'];

echo '<ul>';
foreach ($navLinks as $title => $url) {
    $active = ($currentUrl == $url) ? 'active' : '';
    echo '<li><a href="' . $url . '" class="' . $active . '">' . $title . '</a></li>';
}
echo '</ul>';
?>