problem in $this->db->or_where()

[eluser]Bigil Michael[/eluser]
but it will not echo the query

i applied like this

function get_ordinary_search($search, $category)
{
if($search!='all'){
$this->db->like('heading', $search);
}
$this->db->where('(cat_id = '.(int)$category.' OR subcat_id = '.(int)$category.')', NULL, FALSE);
$this->db->where('featured', '1');
$this->db->where('status', '1');

$result_category_newss = $this->db->get('classifieds');
$this->output->enable_profiler();
echo $result_category_newss;
return $result_category_newss->result();

}

and it shows some error