How can PHP be used to create an administration area for navigation on a website?

To create an administration area for navigation on a website using PHP, you can create a separate PHP file that contains an array of navigation links. Then, you can include this file in your main website template to dynamically generate the navigation menu based on the links in the array.

// admin_navigation.php

$admin_nav_links = array(
    'Dashboard' => 'dashboard.php',
    'Users' => 'users.php',
    'Settings' => 'settings.php'
);
```

```php
// index.php

include 'admin_navigation.php';

echo '<ul>';
foreach ($admin_nav_links as $title => $link) {
    echo '<li><a href="' . $link . '">' . $title . '</a></li>';
}
echo '</ul>';