$this->model_board->Board_Column_Info();

[07-Apr-2014 08:11:22 Europe/Istanbul] PHP Fatal error:  Call to undefined method Model_board::Board_Column_Info() in /home/project/public_html/application/controllers/main.php on line 6396

$this->model_board->Board_Column_info();

function Board_Column_Info ( $board_column_id )
{

    $this->db->select('*');

    $this->db->from('board_column');

    $this->db->where('board_column_id', $board_column_id );


    $query = $this->db->get();

    if ( $query->num_rows() > 0 )
    {
        $row = $query->row_array();
        return $row;
    }
    else
    {
        return FALSE;
    }

}

i I lowercase and uppercase i
ı I lowercase and uppsercase ı