function delete()
 {
     global $wpdb;
     if (isset($_REQUEST['members'])) {
         $members = $_REQUEST['members'];
         if (!empty($members)) {
             $members = array_map('absint', $members);
             foreach ($members as $swpm_id) {
                 $user_name = BUtils::get_user_by_id(absint($swpm_id));
                 BMembers::delete_wp_user($user_name);
             }
             $query = "DELETE FROM " . $wpdb->prefix . "swpm_members_tbl WHERE member_id IN (" . implode(',', $members) . ")";
             $wpdb->query($query);
         }
     } else {
         if (isset($_REQUEST['member_id'])) {
             $id = absint($_REQUEST['member_id']);
             BMembers::delete_user_by_id($id);
         }
     }
 }