Sharing of common usage scenarios of Redis

$redis->connect('127.0.0.1', 6379);
$strCacheKey  = 'Test_bihu';//SET 应用$arrCacheData = [    'name' => 'job',    'sex'  => '男',    'age'  => '30'];
$redis->set($strCacheKey, json_encode($arrCacheData));
$redis->expire($strCacheKey, 30);  # 设置30秒后过期$json_data = $redis->get($strCacheKey);
$data = json_decode($json_data);
print_r($data->age); //输出数据//HSET 应用$arrWebSite = [    'google' => [        'google.com',        'google.com.hk'
    ],
];
$redis->hSet($strCacheKey, 'google', json_encode($arrWebSite['google']));
$json_data = $redis->hGet($strCacheKey, 'google');
$data = json_decode($json_data);
print_r($data); //输出数据

$redis->connect('127.0.0.1', 6379);
$strQueueName  = 'Test_bihu_queue';//进队列$redis->rpush($strQueueName, json_encode(['uid' => 1,'name' => 'Job']));
$redis->rpush($strQueueName, json_encode(['uid' => 2,'name' => 'Tom']));
$redis->rpush($strQueueName, json_encode([&#39;uid&#39; => 3,&#39;name&#39; => &#39;John&#39;]));echo "---- 进队列成功 ---- <br /><br />";//查看队列$strCount = $redis->lrange($strQueueName, 0, -1);echo "当前队列数据为： <br />";
print_r($strCount);//出队列$redis->lpop($strQueueName);echo "<br /><br /> ---- 出队列成功 ---- <br /><br />";//查看队列$strCount = $redis->lrange($strQueueName, 0, -1);echo "当前队列数据为： <br />";
print_r($strCount);

//以下是 pub.php 文件的内容 cli下运行ini_set('default_socket_timeout', -1);
$redis->connect('127.0.0.1', 6379);
$strChannel = &#39;Test_bihu_channel&#39;;//发布$redis->publish($strChannel, "来自{$strChannel}频道的推送");echo "---- {$strChannel} ---- 频道消息推送成功～ <br/>";
$redis->close();

//以下是 sub.php 文件内容 cli下运行ini_set('default_socket_timeout', -1);
$redis->connect('127.0.0.1', 6379);
$strChannel = &#39;Test_bihu_channel&#39;;//订阅echo "---- 订阅{$strChannel}这个频道，等待消息推送...----  <br/><br/>";
$redis->subscribe([$strChannel], &#39;callBackFun&#39;);function callBackFun($redis, $channel, $msg){
    print_r([        &#39;redis&#39;   => $redis,        &#39;channel&#39; => $channel,        &#39;msg&#39;     => $msg
    ]);
}

$redis->connect('127.0.0.1', 6379);
$strKey = 'Test_bihu_comments';//设置初始值$redis->set($strKey, 0);

$redis->INCR($strKey);  //+1$redis->INCR($strKey);  //+1$redis->INCR($strKey);  //+1$strNowCount = $redis->get($strKey);echo "---- 当前数量为{$strNowCount}。 ---- ";

$redis->connect('127.0.0.1', 6379);
$strKey = 'Test_bihu_score';//存储数据$redis->zadd($strKey, '50', json_encode(['name' => 'Tom']));
$redis->zadd($strKey, '70', json_encode(['name' => 'John']));
$redis->zadd($strKey, '90', json_encode(['name' => 'Jerry']));
$redis->zadd($strKey, '30', json_encode(['name' => 'Job']));
$redis->zadd($strKey, '100', json_encode(['name' => 'LiMing']));

$dataOne = $redis->ZREVRANGE($strKey, 0, -1, true);echo "---- {$strKey}由大到小的排序 ---- <br /><br />";
print_r($dataOne);

$dataTwo = $redis->ZRANGE($strKey, 0, -1, true);echo "<br /><br />---- {$strKey}由小到大的排序 ---- <br /><br />";
print_r($dataTwo);

/**
 * 获取锁
 * @param  String  $key    锁标识
 * @param  Int     $expire 锁过期时间
 * @return Boolean
 */public function lock($key = '', $expire = 5) {
    $is_lock = $this->_redis->setnx($key, time()+$expire);    //不能获取锁
    if(!$is_lock){        //判断锁是否过期
        $lock_time = $this->_redis->get($key);        //锁已过期，删除锁，重新获取
        if (time() > $lock_time) {
            unlock($key);
            $is_lock = $this->_redis->setnx($key, time() + $expire);
        }
    }    return $is_lock? true : false;
}/**
 * 释放锁
 * @param  String  $key 锁标识
 * @return Boolean
 */public function unlock($key = ''){    return $this->_redis->del($key);
}// 定义锁标识$key = &#39;Test_bihu_lock&#39;;// 获取锁$is_lock = lock($key, 10);if ($is_lock) {    echo &#39;get lock success<br>&#39;;    echo &#39;do sth..<br>&#39;;
    sleep(5);    echo &#39;success<br>&#39;;
    unlock($key);
} else { //获取锁失败
    echo &#39;request too frequently<br>&#39;;
}

$strKey = 'Test_bihu_age';

$redis->set($strKey,10);

$age = $redis->get($strKey);echo "---- Current Age:{$age} ---- <br/><br/>";

$redis->watch($strKey);// 开启事务$redis->multi();//在这个时候新开了一个新会话执行$redis->set($strKey,30);  //新会话echo "---- Current Age:{$age} ---- <br/><br/>"; //30$redis->set($strKey,20);

$redis->exec();

$age = $redis->get($strKey);echo "---- Current Age:{$age} ---- <br/><br/>"; //30//当exec时候如果监视的key从调用watch后发生过变化，则整个事务会失败