controller

function index()
    {
        $this->load->model('post_model');
        
        $this->arr['title'] = 'Admin panel';
        $this->arr['content'] = $this->load->file('application/views/post.php', true);
        $this->arr['url'] = base_url();
        $this->arr['sites'] = $this->post_model->get_sites();
        
        echo "<pre>";
            print_r($this->arr['sites']); // проверка значения полученного из модели
        echo "</pre>";
        
        
        $this->load_views();
        
        
    }