Files: wp-admin/includes/class-wp-site-health.php

Run a loopback test on our site.

Create a weekly cron event, if one does not already exist.

Run our scheduled event to check and update the latest site health status for the website.

Test if plugin and theme auto-updates appear to be configured correctly.

Test if loopbacks work as expected.

Test if HTTP requests are blocked.

Test if the supplied PHP version is supported.

Test if the REST API is accessible.

Check if the passed extension or function are available.

Test if ‘file_uploads’ directive in PHP.ini is turned off.

Test if required PHP modules are installed on the host.

Return a set of tests that belong to the site status page.

Test if the PHP default timezone is set to UTC.

Test if there’s an active PHP session that can affect loopback requests.

Test if the SQL server is up to date.