function haschild2($parent_id=0)
{
    $row=false;
    $sql="SELECT `id`, `name`, `parent_id` FROM `beh_cat_article` where `id`=$parent_id";
    $data=$this->db->query($sql)->result_array();

    if($this->db->query($sql)->num_rows()>0)
    {
        foreach($data as $key=> $value)
        {
            $id=$value['id'];
            $sql="SELECT `id`, `name`, `parent_id` FROM `beh_cat_article` where `parent_id`=$id";
            $option='<option value="'.$value['id'].'>'.$value['name'].'</option>';
            return $option;
        }
    }