PHP CI框架数据库常用操作

　　

　　例子

<?php 
defined('BASEPATH') OR exit('No direct script access allowed');

class Menu extends CI_Controller{
    function __construct(){
        parent::__construct();
        $this->load->database(); //加载数据库配置
    }
    
    public function getTop(){
        echo 'TEST';
        $res = $this->db->query('select id,name,url from web_menu');
        //$r = $res->result(); //返回数据为对象类型
        $r = $res->result_array(); //返回数据为数组类型
        var_dump($r);
    }
     public function getBotton(){
         $res = $this->db->query('select id,name,url from web_menufoot');
         $r = $res->result_array(); //返回数据为数组类型
         var_dump($r);
     }
     
     public function delBotton(){
         //$id = $this->input->post('id');
         $id = 5;
         $r = $this->db->query('delete from web_menufoot where id=?',$id);
         echo $r; //返回执行成功的数目
     }
     
     public function upTop(){
         //$id = $this->input->post('id'); //获取传递的值
         $id = 5;
         $data = array(
             'name' => '图片',
             'mif_time' =>date("Y-m-d h:i:s",time()),
             'mif_user' =>'Admin',
             'mif_ip'   =>'127.0.0.1',
         );
         $where = "id=".$id;
         $r = $this->db->update('web_menu',$data,$where);
         echo $r; 
     }
     
}