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
