How can PHP developers ensure that their website navigation is user-friendly and accessible for all users?

PHP developers can ensure their website navigation is user-friendly and accessible by utilizing semantic HTML markup, providing descriptive link text, creating a clear and organized navigation structure, and implementing keyboard accessibility. Additionally, developers should test their navigation on different devices and screen sizes to ensure a consistent experience for all users.

<nav>
    <ul>
        <li><a href="index.php">Home</a></li>
        <li><a href="about.php">About Us</a></li>
        <li><a href="services.php">Services</a></li>
        <li><a href="contact.php">Contact Us</a></li>
    </ul>
</nav>