wp-admin/includes/ajax-actions.php:5398Handles site health checks on background updates via AJAX.
function wp_ajax_health_check_background_updates() { _doing_it_wrong( 'wp_ajax_health_check_background_updates', sprintf( /* translators: 1: The Site Health action that is no longer used by core. 2: The new function that replaces it. */ __( 'The Site Health check for %1$s has been replaced with %2$s.' ), 'wp_ajax_health_check_background_updates', 'WP_REST_Site_Health_Controller::test_background_updates' ), '5.6.0' ); check_ajax_referer( 'health-check-site-status' ); if ( ! current_user_can( 'view_site_health_checks' ) ) { wp_send_json_error(); } if ( ! class_exists( 'WP_Site_Health' ) ) { require_once ABSPATH . 'wp-admin/includes/class-wp-site-health.php'; } $site_health = WP_Site_Health::get_instance(); wp_send_json_success( $site_health->get_test_background_updates() );}Introduced in 5.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/ajax-actions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.