get field name in codeigniter

function get_field()
{
$result = $this->db->list_fields('user');
foreach($result as $field)
{
$data[] = $field;
return $data;
}
}

in your controller do this

function get_field()
{
$data['field'] = $this->model_name->get_field();
$this->load->view('view_name',$data);
}

in your view do this

foreach($field as $f)
{
echo $f."<br>"; //this will echo all your fields
}

hope this will help you