Codeigniter注册登录代码示例

前端技术 2023/09/04 PHP

本示例Codeigniter注册登录代码源自一个codeigniter的项目，现分享下~

由于使用了 Active Record 类，一般数据库操作只有两层，即是C和V

controllers/login.php文件：

复制代码 代码如下:
<?php
class Login extends CI_Controller {
 private $pass = \'\';
 public function __construct() {
  parent::__construct ();
  $this->load->helper ( array (
    \'form\',
    \'url\'
  ) );
  $this->load->library(\'session\');
 }
 public function index() {
  $this->load->view ( \'login\' );
 }
 public function formsubmit() {
  $this->load->library ( \'form_validation\' );

  $this->form_validation->set_rules ( \'username\', \'Username\', \'required\' );
  $this->form_validation->set_rules ( \'password\', \'Password\', \'required\' );
  if ($this->form_validation->run () == FALSE) {
   $this->load->view ( \'login\' );
  } else {
   if (isset ( $_POST [\'submit\'] ) && ! empty ( $_POST [\'submit\'] )) {
    $data = array (
      \'user\' => $_POST [\'username\'],
      \'pass\' => md5($_POST [\'password\'])
    );
    $newdata = array(
      \'username\'  =>  $data [\'user\'] ,
      \'userip\'     => $_SERVER[\'REMOTE_ADDR\'],
      \'luptime\'   =>time()
    );
    if ($_POST [\'submit\'] == \'login\') {
     $query = $this->db->get_where ( \'uc_user\', array (
       \'user\' => $data [\'user\']
     ), 1, 0 );

     foreach ( $query->result () as $row ) {
      $pass = $row->pass;
     }
     if ($pass == $data [\'pass\']) {

      $this->session->set_userdata($newdata);
      $this->load->view ( \'usercenter\', $data );
     }
    } else if ($_POST [\'submit\'] == \'register\') {

     $this->session->set_userdata($newdata);
     $this->db->insert ( \'uc_user\', $data );
     $this->load->view ( \'usercenter\', $data );
    } else {
     $this->session->sess_destroy();
     $this->load->view ( \'login\' );
    }
   }
  }
 }
}

views/login.php文件：

复制代码 代码如下:
<html>
<?php echo validation_errors(); ?>
<?php echo form_open(\'login/formsubmit\'); ?>
<table>
<tr>
<td>用户名</td>
<td><input type=\"text\" name=\"username\"></td>
</tr>
<tr>
<td>密码</td>
<td><input type=\"password\" name=\"password\"></td>
</tr>
<tr>
<td>
<input type=\"submit\" name=\"submit\" value=\"login\">
</td>
<td>
<input type=\"submit\" name=\"submit\" value=\"register\">
</td>
</tr>
</table>
</form>
</html>

sql语句：

uc_user：

复制代码 代码如下:
  CREATE TABLE `uc_user` (                                  
           `id` int(11) unsigned zerofill NOT NULL AUTO_INCREMENT, 
           `user` varchar(20) NOT NULL,                            
           `pass` char(32) NOT NULL,                               
           `role` enum(\'root\',\'normal\') NOT NULL DEFAULT \'root\',   
           `del` decimal(1,0) NOT NULL DEFAULT \'0\',                
           PRIMARY KEY (`id`)                                      
         ) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1 

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