wp-admin/includes/class-wp-site-health.php:244Tests whether wp_version_check is blocked.
public function check_wp_version_check_exists() { if ( ! is_admin() || ! is_user_logged_in() || ! current_user_can( 'update_core' ) || ! isset( $_GET['health-check-test-wp_version_check'] ) ) { return; } echo ( has_filter( 'wp_version_check', 'wp_version_check' ) ? 'yes' : 'no' ); die(); }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/class-wp-site-health.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.