连接redis
<?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"><br> 密码:<input type="password"><br> 年龄:<input type="text"><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,$uid); header('location:list.php');
列表页面
list.php
<a href="https://www.jb51.net/add.php" >注册</a> <?php require("redis.php"); if(!empty($_COOKIE['auth'])){ $id = $redis->get("auth:".$_COOKIE['auth']); $name = $redis->hget("user:".$id,"username"); ?> 欢迎您:<?php echo $name;?> <a href="https://www.jb51.net/logout.php" >退出</a> <?php } else { ?> <a href="https://www.jb51.net/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> <!--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 setcookie("auth","",time()-1); header("location:list.php");
login.php