Groups: Remove User Automatically From Registered Group

This is a fix for a bug that came through regarding the automatic addition of the  Registered group to users. The client’s site depended on users only being a member of a single group.

My fix is specific for using WooCommerce since it’s using the woocommerce_before_cart filter, but it could be modified to use any filter.

• Groups

<?php

add_filter ( 'woocommerce_before_cart', 'remove_user_from_registered_group' );
function remove_user_from_registered_group ( ) {

        $user_id              =  get_current_user_id( );
        $registered_group_id  =  1;
        $group_delete         =  new Groups_User_Group( $user_id, $group_id );
        $group_delete::delete ( $user_id, $registered_group_id );
}

?>