Multiple DB Where

I am setting up my multiple site data in a custom config file and I able able to set data from database on my config file

But when I use multiple where it disables data I have tried or_where but then cancels out the default where

How can I make my default where work but also work with my other id

It can only seem to work with one website_id.

Name of application > config > setting.php

PHP Code:

<?php

require_once( BASEPATH .'database/DB'. EXT );

$db =& DB();

$db->select('website_id');
$db->from($db->dbprefix . 'websites');
$website_query = $db->get();
$row = $website_query->row();

$db->select('*');
$db->from($db->dbprefix . 'setting');
$db->where('website_id', "0");
$db->or_where('website_id', $row->website_id); // cancels out where()
$db->order_by('website_id', 'ASC');
$setting_query = $db->get();

foreach ($setting_query->result_array() as $result) {
    if (!$result['serialized']) {
        $config[$result['key']] = $result['value'];
    } else {
        $config[$result['key']] = unserialize($result['value']);
    }
} 


There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!