[ZERO <ibis>]

I am running into a strange problem where the function below is not working:

*Note that $userid is feeding the correct value

PHP Code:

$sbquery2 = $db->query_read("
            SELECT " . TABLE_PREFIX . "user.membergroupids
            FROM " . TABLE_PREFIX . "user
            WHERE " . TABLE_PREFIX . "user.userid = $userid
        ");
        
        $sbrow2 = $db->fetch_array($sbquery2);
        $sbmemgroups = $sbrow2['membergroupids'];
    }

    $sbusergroups = explode(",", $sbmemgroups); 


I am running this on paidsub_build and paidsub_delete.

Note that the explode works fine in useradmin_update_save where it is fed

PHP Code:

$userdata->fetch_field('membergroupids') 


This leads me to believe that I am doing something wrong with the sql however it does not generate any errors.

Thanks for the help