php - Codeigniter how to use get_where/or_where together to return a result_array -

i trying result_array() database 2 columns must return true, , vise-versa decided use or_where code returning call undefined method ci_db_mysqli_result::or_where() error, advice how can achieve this?

i using below code on inside ci_model.

public function check_request($userid, $senderid){      $query = $this->db->get_where('connection',array('user_id' => $userid, 'sender_id' => $senderid));      $query = $this->db->or_where('connection',array('sender_id' => $userid, 'user_id' => $senderid));      return $query->result_array(); } 

try below:

public function check_request($userid, $senderid){    $this->db->select('*');    $this->db->where("(user_id = '$userid' , sender_id = '$senderid')                 or (sender_id='$userid' , user_id = '$senderid')");    $query = $this->db->get('connection');    return $query->result_array(); }