redis+php实现微博（二）发布与关注功能详解

本文实例讲述了redis+php实现微博发布与关注功能。分享给大家供大家参考，具体如下：

数据结构：

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:$postidcho “用户名密码不能够为空!”;

关注微博

following:3

被关注（粉丝）

followed:3

把发布的微博推给自己的粉丝

recivepost:10 postid

微博的发布代码：

include("function.php");
include("header.php");
$content = I('content');
if(!$content){
  error('内容不能够为空');
}
$user = isLogin();
if($user==false){
  header("location:index.php");
  exit();
}
$r = redis_connect();
$postid = $r->incr('global:postid');
//$r->set("post:postid:".$postid.":time",time());
//$r->set("post:postid:".$postid.":userid",$user['userid']);
//$r->set("post:postid:".$postid.":content",$content);
$r->hmset("post:postid:".$postid,array('userid'=>$user['userid'],'username'=>$user['username'],'time'=>time(),'content'=>$content));
//把微博推给自己的粉丝
$fans = $r->smembers("followed:".$user['userid']);
$fans[] = $user['userid'];
foreach($fans as $fansid){
  $r->lpush('recivepost:'.$fansid,$postid);
}
//单独累计个人发布的信息
$r->lpush('userpostid:'.$user['userid'],$postid);
header("location:home.php");
exit;
include("bottom.php");

微博的关注代码：

include("function.php");
include("header.php");
if(isLogin()==false){
  header("location:index.php");
  exit;
}
$user = isLogin();
$uid = trim($_GET['uid']);
$f = trim($_GET['f']);
$r = redis_connect();
if($f==0){
  //将关注与被关注的数据结构存入redis
  $r->sadd("following:".$user['userid'],$uid);
  $r->sadd("followed:".$uid,$user['userid']);
}else{ 
  //取消关注
  $r->srem("following:".$user['userid'],$uid);
  $r->srem("followed:".$uid,$user['userid']);
}
//根据传递过来的userid查找username
$uname = $r->get("user:userid:".$uid.":username");
header("location:profile.php?u=".$uname);
include("bottom.php");

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