How can PHP developers ensure a well-thought-out navigation system to reduce the need for custom back buttons in web applications?

To ensure a well-thought-out navigation system in PHP web applications, developers can implement a consistent and intuitive menu structure, utilize breadcrumbs for easy navigation, and incorporate proper URL structures. By following these best practices, users can easily navigate through the website without the need for custom back buttons.

<?php
// Example of a basic navigation menu structure in PHP
$menuItems = array(
    'Home' => 'index.php',
    'About Us' => 'about.php',
    'Services' => 'services.php',
    'Contact Us' => 'contact.php'
);

echo '<ul>';
foreach ($menuItems as $menuItem => $url) {
    echo '<li><a href="' . $url . '">' . $menuItem . '</a></li>';
}
echo '</ul>';
?>