ci框架
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: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:
用户名
密码
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