Please Help : num_rows() showing 0

[eluser]FutureKing[/eluser]
The code is working fine. Problem was here:
$this->db->insert('terms', $data);
} else {
$termid=$this->check_term($term);
}
return $termid;
I changed it into
$this->db->insert('terms', $data);
}
$termid=$this->check_term($term);

return $termid;