Redis实现注册、删除、编辑、分页功能

本文实例讲述了php+redis实现注册、删除、编辑、分页、登录、关注等功能。分享给大家供大家参考，具体如下：

主要界面

连接redis

redis.php

<?php
 //实例化
 $redis = new Redis();
 //连接服务器
 $a=$redis->connect("localhost",6379);
 //var_dump($a);
 //授权
 $redis->auth("107lab");

注册界面

add.php

<form action="reg.php" method="post">
 用户名:<input type="text" name="username"><br>
 密码:<input type="password" name="password"><br>
 年龄:<input type="text" name="age"><br>
 <input type="submit" value="注册">
 <input type="reset" value="重填">
</form>

注册实现

reg.php

<?php
 require("redis.php");
 $username = $_POST['username'];
 $password = md5($_POST['password']);
 $age = $_POST['age'];
 //echo $username.$password.$age;
 $uid = $redis->incr("userid");//设置自增id，相当于主键
 $redis->hMset("user:".$uid,array("uid"=>$uid,"username"=>$username,"password"=>$password,"age"=>$age));//用hash类型存储用户比较方便
 //将用户id存入一个链表中，便于统计数据
 $redis->rpush("uid",$uid);
 //将用id存入以用户名为键的字符类型中，便于查看用户是否存在。
 $redis->set("username:".$username,$uid);
 header('location:list.php');

列表页面

list.php

<a href="add.php" rel="external nofollow" >注册</a>
<?php
 require("redis.php");
 if(!empty($_COOKIE['auth'])){
 $id = $redis->get("auth:".$_COOKIE['auth']);
 $name = $redis->hget("user:".$id,"username");
?>
 欢迎您：<?php echo $name;?> <a href="logout.php" rel="external nofollow" >退出</a>
 <?php } else { ?>
 <a href="login.php" rel="external nofollow" >登录</a>
 <?php } ?>
<?php
 require("redis.php");
 //用户总数
 $count = $redis->lsize("uid");//获取链表的长度
 //echo $count;
 //页大小
 $page_size = 3;
 //当前页码
 $page_num=(!empty($_GET['page']))?$_GET['page']:1;
 //页总数
 $page_count = ceil($count/$page_size);
 $ids = $redis->lrange("uid",($page_num-1)*$page_size,(($page_num-1)*$page_size+$page_size-1));
 //var_dump($ids);
 foreach($ids as $v){
 $data[]=$redis->hgetall("user:".$v);
 }
 /*
 //以下为最初想到的分页处理，放入一个数组中，根据uid的最大值来当总个数，但是删除个别用户以后，uid不会变小，所以建议用链表，因为他有个lsize函数可以求出链表长度
 //根据userid获取所有用户
 for($i=1;$i<=($redis->get("userid"));$i++){
 $data[]=$redis->hgetall("user:".$i);
 }
 //过滤空值
 $data = array_filter($data);
 //var_dump($data);
 */
?>
<table border=1>
 <tr>
 <th>uid</th>
 <th>username</th>
 <th>age</th>
 <th>操作</th>
 </tr>
 <?php foreach($data as $v){ ?>
 <tr>
 <td><?php echo $v['uid']?></td>
 <td><?php echo $v['username']?></td>
 <td><?php echo $v['age']?></td>
 <td>
 <a href="del.php?id=<?php echo $v['uid'];?>" rel="external nofollow" >删除</a>
 <a href="mod.php?id=<?php echo $v['uid'];?>" rel="external nofollow" >编辑</a>
 <?php if(!empty($_COOKIE['auth']) && $id != $v['uid']){ ?>
 <a href="addfans.php?id=<?php echo $v['uid'];?>&uid=<?php echo $id;?>" rel="external nofollow" >加关注</a>
 <?php } ?>
 </td>
 </tr>
 <?php } ?>
 <tr>
 <td colspan="4">
 <?php if(($page_num-1)>=1){ ?>
 <a href="?page=<?php echo ($page_num-1);?>" rel="external nofollow" >上一页</a>
 <?php } ?>
 <?php if(($page_num+1)<=$page_count){ ?>
 <a href="?page=<?php echo ($page_num+1);?>" rel="external nofollow" >下一页</a>
 <?php } ?>
 <a href="?page=1" rel="external nofollow" >首页</a>
 <a href="?page=<?php echo ($page_count);?>" rel="external nofollow" >尾页</a>
 当前<?php echo $page_num;?>页
 总共<?php echo $page_count;?>页
 总共<?php echo $count;?>个用户
 </td>
 </tr>
</table>
<!--关注功能，建议用集合实现，因为集合元素唯一，并且可以容易求出两个用户粉丝之间交集与差集，进而进行好友推荐功能-->
<table border=1>
 <caption>我关注了谁</caption>
 <?php
 $data = $redis->smembers("user:".$id.":following");
 foreach($data as $v){
 $row = $redis->hgetall("user:".$v);
 ?>
 <tr>
 <td><?php echo $row['uid'];?></td>
 <td><?php echo $row['username'];?></td>
 <td><?php echo $row['age'];?></td>
 </tr>
 <?php } ?>
<table>
<table border=1>
 <caption>我的粉丝</caption>
 <?php
 $data = $redis->smembers("user:".$id.":followers");
 foreach($data as $v){
 $row = $redis->hgetall("user:".$v);
 ?>
 <tr>
 <td><?php echo $row['uid'];?></td>
 <td><?php echo $row['username'];?></td>
 <td><?php echo $row['age'];?></td>
 </tr>
 <?php } ?>
<table>

退出

logout.php

<?php
 require("redis.php");
 $username = $_POST['username'];
 $pass = $_POST['password'];
 //根据注册时存储的以用户名为键的字符类型中查找用户id
 $id = $redis->get("username:".$username);
 if(!empty($id)){
 $password = $redis->hget("user:".$id,"password");
 if(md5($pass) == $password){
 $auth = md5(time().$username.rand());
 $redis->set("auth:".$auth,$id);
 setcookie("auth",$auth,time()+86400);
 header("location:list.php");
 }
 }
?>
<form action="" method="post">
 用户名:<input type="text" name="username"/><br>
 密码:<input type="password" name="password"><br>
 <input type="submit" value="登录"/>
</form>

删除

del.php

<?php
 require("redis.php");
 $uid = $_GET['id'];
 //echo $uid;
 $username = $redis->hget("user:".$id,"username");
 $a=$redis->del("user:".$uid);
 $redis->del("username:".$username);
 $redis->lrem("uid",$uid);
 //var_dump($a);
 header("location:list.php");

编辑界面

mod.php

<?php
 require("redis.php");
 $uid = $_GET['id'];
 $data=$redis->hgetall("user:".$uid);
?>
<form action="doedit.php" method="post">
 <input type="hidden" value="<?php echo $data['uid'];?>" name="uid">
 用户名:<input type="text" name="username" value="<?php echo $data['username'];?>"><br>
 年龄:<input type="text" name="age" value="<?php echo $data['age'];?>"><br>
 <input type="submit" value="提交">
 <input type="reset" value="重填">
</form>

编辑功能

doedit.php

<?php
 require('redis.php');
 $uid = $_POST['uid'];
 $username = $_POST['username'];
 $age = $_POST['age'];
 $a=$redis->hmset("user:".$uid,array("username"=>$username,"age"=>$age));
 if($a){
 header("location:list.php");
 }else{
 header("location:mod.php?id=".$uid);
 }

加关注

addfans.php

<?php

//关注功能，建议用集合实现，因为集合元素唯一，并且可以容易求出两个用户粉丝之间交集与差集，进而进行好友推荐功能

$id = $_GET['id'];

$uid = $_GET['uid'];

require("redis.php");

$redis->sadd("user:".$uid.":following",$id);

$redis->sadd("user:".$id.":followers",$uid);

header("location:list.php");