function isLogin()
{
if (!isset($_COOKIE['userid']) || !$_COOKIE['username']) {
return false;
}
$r = connredis();
$authsecret = $r->get('user:userid:' . $_COOKIE['userid'] . ':authsecret');
if ($authsecret != $_COOKIE['authsecret']) {
return false;
}
return array('userid' => $_COOKIE['userid'], 'username' => $_COOKIE['username']);
}
<?php
include 'lib.php';
if (isLogin() != false) {
header('location:home.php');
exit;
}
$username = $_POST['username'];
$password = $_POST['password'];
$password2 = $_POST['password2'];
if (!$username || !$password || !$password2) {
exit('请输入完整信息');
}
if ($password !== $password2) {
exit('2次密码不一致');
}
$r = connredis();
if ($r->get('user:username:'******':userid')) {
exit('用户名已经被注册');
}
//获取userID
$userid = $r->incr('global:userid');
$r->set('user:userid:' . $userid . ':username', $username);
$r->set('user:userid:' . $userid . ':password', $password);
$r->set('user:username:'******':userid', $userid);
//通过一个链表，维护50个表的最新的userid
$r->lpush('newuserlink', $userid);
$r->ltrim('newuserlink', 0, 49);