CodeIgniter - return only one row?
You've just answered your own question :)You can do something like this:
$query = $this->db->get();$ret = $query->row();return $ret->campaign_id;You can read more about it here: http://www.codeigniter.com/user_guide/database/results.html
This is better way as it gives you result in a single line:
$this->db->query("Your query")->row()->campaign_id;
To add on to what Alisson said you could check to see if a row is returned.
// Query stuff ...$query = $this->db->get();if ($query->num_rows() > 0){ $row = $query->row(); return $row->campaign_id;}return null; // or whatever value you want to return for no rows found