phpredis实战--简单实现注册，删除，编辑，分页,登录，关注等功能

爱被打了一巴掌 2022-07-16 04:13 186阅读 0赞

# 主要界面 #

![示例][20161004101637197]

# 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

# 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">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">退出</a>
        <?php } else { ?>
        <a href="login.php">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'];?>">删除</a>
                <a href="mod.php?id=<?php echo $v['uid'];?>">编辑</a>
                <?php if(!empty($_COOKIE['auth']) && $id != $v['uid']){ ?>
                <a href="addfans.php?id=<?php echo $v['uid'];?>&uid=<?php echo $id;?>">加关注</a>
                <?php } ?>
            </td>
        </tr>
        <?php } ?>
        <tr>
            <td colspan="4">
                <?php if(($page_num-1)>=1){ ?>
                <a href="?page=<?php echo ($page_num-1);?>">上一页</a>
                <?php } ?>
                <?php if(($page_num+1)<=$page_count){ ?>
                <a href="?page=<?php echo ($page_num+1);?>">下一页</a>
                <?php } ?>
                <a href="?page=1">首页</a>
                <a href="?page=<?php echo ($page_count);?>">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>
    
    
    
    <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
        setcookie("auth","",time()-1);
        header("location:list.php");

# 登录 #

<?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");

[20161004101637197]: /images/20220716/8a9e6ef8947b436ba44c644ce20d4924.png