What are the limitations of using PHP for manipulating browser behavior?

One limitation of using PHP for manipulating browser behavior is that PHP is a server-side language, meaning it cannot directly interact with the client-side browser. To overcome this limitation, you can use JavaScript in conjunction with PHP to achieve the desired browser behavior. By using JavaScript to handle client-side interactions and PHP to handle server-side processing, you can create dynamic and interactive web applications.

// PHP code to set a cookie with JavaScript
echo '<script>';
echo 'document.cookie = "username=John Doe";';
echo '</script>';