User registration add user ID?
You can’t add the ID at registration because there is no ID until after the user has registered. (See a possible way around this near the bottom). You could tack on the ID after the registration with the user_register hook. function add_ID_wpse_99390($a) { global $wpdb; $user = new WP_User($a); $wpdb->query(“UPDATE {$wpdb->users} SET user_login = CONCAT(user_login,’_’,ID) … Read more