一.redis.PHP

<?PHP
      //实例化
      $redis = new Redis();
      //连接服务器
      $redis->connect("localhost");
      //授权
      $redis->auth("lamplijie");
      //相关操作
      $redis->set("name","lampbrother");
      $data = $redis->key("*");
      var_dump($data);

页面显示结果：

array(1) { [0]=> string(4) "name" }

二.简单回顾redis的四种数据类型

a.string：最简单的数据类型

set user:001:name lijie
set user:001:age 20

b.hash：可以当做表，hash table，比string速度快

hset user:001 name lamp age 20
hset user:001 sex nan
hset user:002 name lijie age 20
hgetall user:001

c.list：栈、队列

d.set：并集、交集、差集

e.zset：set升级版，多了一个顺序

三.小型的用户管理系统（用户的增删改查、分页、登陆退出、加关注）

redis.PHP

<?PHP
    //实例化
    $redis = new Redis();
    //连接服务器
    $redis->connect("localhost");
    //授权
    $redis->auth("lamplijie");

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="重新填写"/>
</form>

reg.PHP

<?PHP
    require("redis.PHP");
    $username = $_POST['username'];
    $password = md5($_POST['password']);
    $age = $_POST['age'];
    echo $uid = $redis->incr("userid");
    $redis->hmset("user:".$uid,array("uid"=>$uid,"username"=>$username,"password"=>$password,"age"=>$age));
    $redis->rpush("uid",$uid);
    $redis->set("username:".$username,$uid);
    header("location: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">登陆</a>
<?PHP
}
    //用户总数
    $count = $redis->lsize("uid");
    
    //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);
    
    /*
    for($i=1;$i<=($redis->get("userid"));$i++) {
        $data[] = $redis->hgetall("user:".$i);
    }*/
    
    foreach($ids as $v){
        $data[] = $redis->hgetall("user:".$v);
    }
    
    //var_dump($data);
    //$data = array_filter($data);
?>
<table border="1">
   <tr>
      <th>uid</th>
      <th>username</th>
      <th>age</th>
      <th>操作</th>
   </tr>
<?PHP foreach($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 $id?>">加关注</a>
           <?PHP } ?>
       </td>
   </tr>
<?PHP}?>
<tr>
   <td colspan="4">
       <a href="?page=<?PHP echo(($page_num-1)<=1)?1:($page_num-1) ?>">上一页</a>
       <a href="?page=<?PHP echo(($page_num+1)>=$page_count)?$page_count:($page_num+1) ?>">下一页</a>
       <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>

del.PHP

<?PHP
   require("redis.PHP");
   $uid = $_GET['id'];
   $redis->del("user:".$uid);
   $redis->lrem("uid",$uid);
   header("localhost:list.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="修改"/>
    <input type="reset" value="重新填写"/>
</form>

doedit.PHP

<?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);
   }

login.PHP

<?PHP
    require("redis.PHP");
    $username = $_POST['username'];
    $pass = $_POST['password'];
    $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="登陆"/>
</form>

logout.PHP

<?PHP
    setcookie("auth","",time()-1);
    header("location:list.PHP");

addfans.PHP

<?PHP
    $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");