還沒吃飯趕時間 今天一樣直接code
controllers/gbook.php

<?php
class gbook extends CI_Controller{
   
    function __construct() {
        parent::__construct();
        $this->load->model('gbook_sql');
        $this->load->helper('url');
    }
   
    //留言版頁面
    function index(){
        $data['query'] = $this->gbook_sql->all();
        $this->load->view('gbook',$data);
    }
   
    //新增留言
    function AddGbook(){
        $all = $this->input->post();
        $this->gbook_sql->add($all,'gbook');
        redirect(site_url().'gbook/index');
    }
   
}
?>

models/gbook_sql.php

<?php
class gbook_sql extends CI_Model{
   
    function __construct() {
        parent::__construct();
         $this->load->database();
    }
   
    function all(){
        $query = $this->db->order_by('id','asc')->get('gbook');
        return $query;
    }
   
    function add($all,$table){
        $this->db->insert($table,$all);
    }
   
}
?>

這樣就是個留言版了
完成圖(昨圖)

明天來講個方法 排序

待續....