'ids', 'number' => 0, // No limit. ) ); foreach ( $inspry_toolkit_site_ids as $inspry_toolkit_site_id ) { switch_to_blog( $inspry_toolkit_site_id ); delete_option( 'inspry_toolkit_last_seen_since' ); restore_current_blog(); } } else { delete_option( 'inspry_toolkit_last_seen_since' ); }