Learn how to configure separate WordPress environments for dev, staging, and production using conditional constants, WP_ENVIRONMENT_TYPE, wp-config-local.php pattern, and .env file integration.
Learn how to debug WordPress AJAX requests step by step. Covers the admin-ajax.php flow, wp_ajax_* hooks, nonce failures, Network tab inspection, wp_send_json_success usage, DOING_AJAX constant, and a complete troubleshooting workflow with PHP and JavaScript code examples.
