WP_Site_Health::get_test_background_updates()
Test if WordPress can run automated background updates.
WordPress File wp-admin/includes/class-wp-site-health.php
WP_Site_Health::get_test_dotorg_communication()
Test if the site can communicate with WordPress.org.
WP_Site_Health::get_test_file_uploads()
Test if ‘file_uploads’ directive in PHP.ini is turned off.
WP_Site_Health::get_test_http_requests()
Test if HTTP requests are blocked.
WP_Site_Health::get_test_https_status()
Test if your site is serving content over HTTPS.
WP_Site_Health::get_test_is_in_debug_mode()
Test if debug information is enabled.
WP_Site_Health::get_test_loopback_requests()
Test if loopbacks work as expected.
WP_Site_Health::get_test_php_default_timezone()
Test if the PHP default timezone is set to UTC.
WP_Site_Health::get_test_php_extensions()
Test if required PHP modules are installed on the host.
WP_Site_Health::get_test_php_sessions()
Test if there’s an active PHP session that can affect loopback requests.