[PHP] redis+php实现微博（一）注册与登录功能详解

set global:userid
set user:userid:1:username zhangshan
set user:userid:1:password 1212121212
set user:username:zhangshan:userid 1

set post:postid:3:time timestamp
set post:postid:3:userid 5
set post:postid:3:content 测试发布哈哈哈哈
incr global:postid
set post:postid:$postid

include("function.php");
//用户表单提交数据接收
$username = I('username');
$password = I('password');
$pwd = I('password2');
if(!$username || !$password || !$pwd){
  exit('用户名密码不能够为空~');
}
if($password!=$pwd){
  exit('两次密码输入不一致哦~');
}
//连接redis调用公用方法
$r = redis_connect();
//判断用户是否注册过
$info = $r->get("user:username:".$username.":userid");
if($info){
  exit('该用户已经注册过');
}
//将用户数据存入redis中
$userid = $r->incr('global:userid');
$r->set("user:userid:".$userid.":username",$username);
$r->set("user:userid:".$userid.":password",$password);
$r->set("user:username:".$username.":userid",$userid);
header("location:home.php");

include("function.php");
//如果用户已经登录调整到微博列表页面
if(isLogin()!=false){
  header("location:home.php");
  exit;
}
$username = I('username');
$password = I('password');
if(!$username || !$password){
  exit('数据输入不完整');
}
$r = redis_connect();
$userid = $r->get("user:username:".$username.":userid");
if(!$userid){
  exit('用户不存在');
}
$password = $r->get("user:userid:".$userid."password:".$password);
if(!password){
  exit('密码输入错误');
}
/**设置cookie登录成功**/
setcookie('username',$username);
setcookie('userid',$userid);
header("location:home.php");

/*
 *@desc 连接redis操作方法
 */
function redis_connect(){
  $redis = new Redis();
  $redis->connect('127.0.0.1',6379);
  return $redis;
}
/*
 *@desc 接收数据方法
 **/
function I($post){
  if(empty($post)){
   return false;
  }
  return trim($_POST[$post]);
}
/**
 *@desc 判断是否登录
 ***/
function isLogin(){
  $username = $_COOKIE['username'];
  $userid = $_COOKIE['userid'];
  if(!$username || $userid){
  return false;
  }
  return array('userid'=>$userid,'username'=>$username);
}