you can do
Model
function getValues(){
$query = $this->db->get('table_name');
$result = array();
foreach ($query->result() as $row) {
$id = str_pad($row->id, 4, '0', STR_PAD_LEFT);
$result[$id] = $row->type;
}
return $result;
}
Controller
$result = $this->model_var->getValues();
$data['result'] = $result;
$this->load->view('view_name',$data);
View
foreach($result as $key => $val) {
echo 'key: ' . $key . ', value: ' . $val;
}