对于codeigniter的增删改，在此我用自己的一个例子来说明一下：
创建数据库：
CREATE TABLE IF NOT EXISTS `users` ( `id` int(10) NOT NULL AUTO_INCREMENT, `username` varchar(50) NOT NULL, `password` varchar(50) NOT NULL, `email` varchar(100) NOT NULL, `fullname` varchar(100) NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `username` (`username`), UNIQUE KEY `email` (`email`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
Model
MTest.php
<?php class MTest extends CI_Model{ public function __construct(){ parent::__construct(); $this->load->database(); } //insert into data public function insert_users($arr){ $this->db->insert('users',$arr); } //delete data public function delete_users($id){ $this->db->where('id',$id); $this->db->delete('users'); } //Alter data public function update_users($username,$arr){ $this->db->where('username',$username); $this->db->update('users',$arr); } //select data public function select_users($id){ $this->db->where('id',$id); $this->db->select('*'); return $this->db->get('users'); //注意如果你返回的是以下内容的话，他就是一个对象的结果集，这样当你返回controller中时，你就得转换； // return $query->result(); } } ?>
Controller
home.php
<?php /** * xxx.php * ============================================== * Copy right 2012-2015 * ---------------------------------------------- * This is not a free software, without any authorization is not allowed to use and spread. * ============================================== * @Author:YeXianMing * @Email:LangWaiShiGe@hotmail.com * @Version:zend studio10.6.2 php5.4.38 apache2.2 */ if(!defined('BASEPATH'))exit('No direct script access allowed'); class Home extends CI_Controller{ public function __construct(){ parent::__construct(); } //insert data public function insert(){ $this->load->model('MTest','',TRUE); $arr=array('username'=>'yexianming1','password'=>'admin','email'=>'11504160314qq.com','fullname'=>'luotianyexianming'); if(!($this->MTest->insert_users($arr))){ echo "插入数据成功"; }else{ echo "插入数据失败"; } } //update data public function update(){ $this->load->model('MTest','',TRUE); $arr=array('username'=>'Helloworld22','password'=>'root','email'=>'895787704@qq.com','fullname'=>'luotianyecong'); if(!($this->MTest->update_users('Helloworld',$arr))){ echo "修改成功"; }else{ echo "修改失败"; } } //delete data public function delete(){ $this->load->model('MTest','',TRUE); $query=$this->MTest->delete_users(12); if(!$query){ echo "删除成功"; }else{ echo "删除失败"; } } //select data public function select(){ $this->load->library('table'); $this->load->model('MTest','',TRUE); $arr=$this->MTest->select_users(3); $userinformation=$this->table->generate($arr); $data['userinfor']=$userinformation; $this->load->view('template',$data); } } ?>
view
temlate.php
<?php echo $userinfor;?>
output:
id username password email fullname 3 Helloworld22 root 1111111@qq.com luotianyecong
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