经测试代码如下:
/**
* 用户登陆验证的类
*
* @param
* @arrange (编程之家) jb51.cc
**/
class Auth
{
var $user_id;
var $username;
var $password;
var $ok;
var $salt = 34asdf34;
var $domain = .domain.com;
function Auth()
{
global $db;
$this->user_id = 0;
$this->username = Guest;
$this->ok = false;
if(!$this->check_session()) $this->check_cookie();
return $this->ok;
}
function check_session()
{
if(!empty($_SESSION['auth_username']) && !empty($_SESSION['auth_password']))
return $this->check($_SESSION['auth_username'],$_SESSION['auth_password']);
else
return false;
}
function check_cookie()
{
if(!empty($_COOKIE['auth_username']) && !empty($_COOKIE['auth_password']))
return $this->check($_COOKIE['auth_username'],$_COOKIE['auth_password']);
else
return false;
}
function login($username,$password)
{
global $db;
$db->query(SELECT user_id FROM users WHERE username = '$username' AND password = '$password');
if(mysql_num_rows($db->result) == 1)
{
$this->user_id = mysql_result($db->result,0);
$this->username = $username;
$this->ok = true;
$_SESSION['auth_username'] = $username;
$_SESSION['auth_password'] = md5($password . $this->salt);
setcookie(auth_username,$username,time()+60*60*24*30,/,$this->domain);
setcookie(auth_password,md5($password . $this->salt),$this->domain);
return true;
}
return false;
}
function check($username,$password)
{
global $db;
$db->query(SELECT user_id,password FROM users WHERE username = '$username');
if(mysql_num_rows($db->result) == 1)
{
$db_password = mysql_result($db->result,1);
if(md5($db_password . $this->salt) == $password)
{
$this->user_id = mysql_result($db->result,0);
$this->username = $username;
$this->ok = true;
return true;
}
}
return false;
}
function logout()
{
$this->user_id = 0;
$this->username = Guest;
$this->ok = false;
$_SESSION['auth_username'] = ;
$_SESSION['auth_password'] = ;
setcookie(auth_username,,time() - 3600,$this->domain);
setcookie(auth_password,$this->domain);
}
}
/*** 来自编程之家 jb51.cc(jb51.cc) ***/
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