$user_id = 1234; $user = new WP_User($user_id); $user->set_role('editor');
$user = wp_get_current_user(); $user->set_role('author');In this example, the code changes the role of the current user to "author." The wp_get_current_user function retrieves the current user object, and the set_role function is used to modify the user's role. Package/Library: WordPress Core Overall, the WP_User set_role function is a powerful tool for developers who need to modify user roles within WordPress. This function is part of the WordPress core library and is available in any WordPress installation.