Top Expert-Level WordPress interview questions

1. How does WordPress handle session management?

• WordPress does not use PHP sessions by default.

• It uses cookies for authentication.

• Plugins like Simple WP Session can be used.

2. How do you debug WordPress issues?

• Enable debugging in wp-config.php:

define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);

• Use the error_log() function.

3. How does WordPress handle AJAX requests?

• AJAX requests are handled via wp_ajax_{action} for logged-in users and wp_ajax_nopriv_{action} for guests.

Example:

add_action('wp_ajax_my_action', 'my_function');
function my_function() {
echo 'AJAX Response';
wp_die();
}

DevOps & Deployment Questions

4. How do you set up a WordPress site in AWS Lightsail?

• Create an AWS Lightsail instance

• Choose WordPress blueprint

• Configure the domain

• Set up SSL

5. How do you set up WordPress in a Docker container?

docker run --name wordpress -p 8080:80 -d wordpress

6. How do you troubleshoot the WordPress White Screen of Death (WSOD)?

• Enable WP_DEBUG

• Disable plugins/themes

• Increase memory limit

• Check server logs