1，資料庫引數設定

2，建立Model

3，控制器獲得資料，並且傳遞引數給檢視

4，檢視顯示資料

1，資料庫引數設定

在[application]->[config]->[database.php]設定資料庫的IP地址、使用者名稱、密碼、資料。

'hostname' => '資料庫地址',
    'username' => '使用者名稱',
    'password' => '密碼',
    'database' => '資料',

2，建立Model

在application/models建立SingerModels.php檔案，在檔案裡面建立SingerModels類並且繼承CI_Model

<?php

class SingerModel extends CI_Model
{

    function SingerModel()
    {
        $this->load->database();
    }

    function getSinger()
    {

        $sql = 'SELECT * from singer';
        // 查詢資料庫
        $query = $this->db->query($sql);
        // $query=$this->db->get('singer');
 

        // 以陣列形式返回查詢結果
        return $query->result_array();
    }


    function insertSinger()
    {
        $sql = "insert into singer(name,introduce)values('king','123')";
        $query = $this->db->query($sql);

        echo $query;
    }

    function insertSinger2()
    {
        $data
 
 = array(
            'name' => "wwesdd",
            'introduce' => "33535y4erth"
        );

        $query = $this->db->insert('singer', $data);

        echo $query;
    }

    function updataSinger1()
    {
        $sql = "update singer set name = 'kinggg' where id=30";
        $query = $this->db->query($sql);
        echo $query;
    }

    function updataSinger2()
    {
        $this->db->set('name', 'field+1');

        $this->db->where('id', 30);

        $query=$this->db->update('singer');

        echo $query;
    }

    function deleteSinger1(){
        $sql = "delete from singer where id =30 ";
        $query = $this->db->query($sql);
        echo $query;
    }


    function deleteSinger2(){
       $this->db->where('id', 31);
       $query =$this->db->delete('singer');
        echo $query;
    }
}
?>

3，控制器獲得資料，並且傳遞引數給檢視

在application/controllers/新增相關的程式碼

<?php 
class Singer extends CI_Controller{   
    function Singer(){
        parent::__construct();
        $this->load->helper('url');
        $this->load->model('SingerModel');
    }
     function index(){
         //$this->SingerModel->deleteSinger2();
         $singers = $this->SingerModel->getSinger();
         $data['singers'] = $singers;
         $this->load->view('singer',$data);

    }
}
?>

4，檢視顯示資料

 <?php 

        $imageUrl = base_url()."images/";
        foreach ($singers as $singer){
            //echo "<p>".$singer['name']."的介紹是</p>";
            $url = $imageUrl.$singer['singer_icon_url'];
            $name = $singer['name'];
            $introduce = $singer['introduce'];

            echo "<tr><td><img id='image' src='".$url."'></td><td><div id='infor'>".$singer['name']."</div></td></tr>";
        }

        ?>