class Header extends Model {
    public function main()
    {
      $settings           = $this->db->query('SELECT * from tm_settings where id=1')->fetch();
        $title            = $settings['title'];
        $description    = $settings['description'];
        $keywords    = $settings['keywords'];
return array("title"=>$title,"desc"=>$description,"key"=>$keywords);
    }   
}

$veri=$this->model->fonksiyon();
echo '<pre>';
print_r($veri);