errReport($this->err_mysql);
$this->err=$this->err_mysql;
}
}
function isLoggedin() //判断是否登录
{
if(isset($_COOKIE['sid'])) //如果cookie中保存有sid
{
session_id($_COOKIE['sid']);
session_start();
$this->username=$_SESSION['username'];
$this->userid=$_SESSION['userid'];
$this->userlevel=$_SESSION['userlevel'];
return true;
}
else //如果cookie中未保存sid,则直接检查session
{
session_start();
if(isset($_SESSION['username']))
return true;
}
return false;
}
function userAuth($username,$userpass) //用户认证
{
$this->username=$username;
$this->userpass=$userpass;
$query="select * from `".$this->authtable."` where `username`='$username';";
$result=mysql_query($query);
if(mysql_num_rows($result)!=0) //找到此用户
{
$row=mysql_fetch_array($result);
if($row['bannd']==1) //此用户被封禁
{
$this->errReport($this->err_user);
$this->err=$this->err_user;
return false;
}
elseif(md5($userpass)==$row['userpass']) //密码匹配
{
$this->userid=$row['id'];
$this->userlevel=$row['userlevel'];
return true;
}
else //密码不匹配
{
$this->errReport($this->err_password);
$this->err=$this->err_password;
return false;
}
}
else //没有找到此用户
{
$this->errReport($this->err_username);
$this->err=$this->err_username;
return false;
}
}
function setSession() //置session
{
$sid=uniqid('sid'); //生成sid
session_id($sid);
session_start();
$_SESSION['username']=$this->username; //给session变量赋值
$_SESSION['userid']=$this->userid; //..
$_SESSION['userlevel']=$this->userlevel; //..
if($this->use_cookie) //如果使用cookie保存sid
{
if(!setcookie('sid',$sid,time()+$this->cookietime,$this->cookiepath))
$this->errReport("set cookie failed");
}
else
setcookie('sid','',time()-3600); //清除cookie中的sid
}
function userLogout() //用户注销
{
session_start();
unset($_SESSION['username']); //清除session中的username
if(setcookie('sid','',time()-3600))
//清除cookie中的sid
return true;
else
return false;
}
function errReport($str) //报错
{
if($this->error_report)
echo "ERROR: $str";
}
}
?>
mysql中表的结构
[url=javascript:;]代码[/url]:
CREATE TABLE `account` (
`id` bigint(20) NOT NULL auto_increment,
`username` varchar(255) NOT NULL
使用一例
PHP代码: