_ide_helper_redis.php

<?php
// source version: https://github.com/JetBrains/phpstorm-stubs/blob/master/redis/Redis.phpdis/Redis.php
// phpdoc version: https://github.com/nrk/predis/blob/v1.1/src/ClientInterface.php
// save this file to your project root

namespace Illuminate\Support\Facades {

    exit('This file should not be included, only analyzed by your IDE');

    /**
     * Helper autocomplete for php redis extension.
     *
     * @author Max Kamashev <max.kamashev@gmail.com>
     *
     * @see   https://github.com/ukko/phpredis-phpdoc
     */
    class Redis
    {
        public const AFTER = 'after';
        public const BEFORE = 'before';

        /**
         * Options.
         */
        public const OPT_SERIALIZER = 1;
        public const OPT_PREFIX = 2;
        public const OPT_READ_TIMEOUT = 3;
        public const OPT_SCAN = 4;
        public const OPT_SLAVE_FAILOVER = 5;
        public const OPT_TCP_KEEPALIVE = 6;
        public const OPT_COMPRESSION = 7;
        public const OPT_REPLY_LITERAL = 8;
        public const OPT_COMPRESSION_LEVEL = 9;

        /**
         * Cluster options.
         */
        public const FAILOVER_NONE = 0;
        public const FAILOVER_ERROR = 1;
        public const FAILOVER_DISTRIBUTE = 2;

        /**
         * SCAN options.
         */
        public const SCAN_NORETRY = 0;
        public const SCAN_RETRY = 1;
        public const SCAN_PREFIX = 2;
        public const SCAN_NOPREFIX = 3;

        /**
         * Serializers.
         */
        public const SERIALIZER_NONE = 0;
        public const SERIALIZER_PHP = 1;
        public const SERIALIZER_IGBINARY = 2;
        public const SERIALIZER_MSGPACK = 3;
        public const SERIALIZER_JSON = 4;

        /**
         * Compressions.
         */
        public const COMPRESSION_NONE = 0;
        public const COMPRESSION_LZF = 1;
        public const COMPRESSION_ZSTD = 2;
        public const COMPRESSION_LZ4 = 3;

        /**
         * Compression ZSTD levels.
         */
        public const COMPRESSION_ZSTD_MIN = 1;
        public const COMPRESSION_ZSTD_DEFAULT = 3;
        public const COMPRESSION_ZSTD_MAX = 22;

        /**
         * Multi.
         */
        public const ATOMIC = 0;
        public const MULTI = 1;
        public const PIPELINE = 2;

        /**
         * Type.
         */
        public const REDIS_NOT_FOUND = 0;
        public const REDIS_STRING = 1;
        public const REDIS_SET = 2;
        public const REDIS_LIST = 3;
        public const REDIS_ZSET = 4;
        public const REDIS_HASH = 5;
        public const REDIS_STREAM = 6;

        /**
         * Creates a Redis client.
         *
         * @example $redis = new Redis();
         */
        public function __construct() {}

        /**
         * Connects to a Redis instance.
         *
         * @param string $host        can be a host, or the path to a unix domain socket
         * @param int    $port        optional
         * @param float  $timeout     value in seconds (optional, default is 0.0 meaning unlimited)
         * @param null   $reserved    should be null if $retryInterval is specified
         * @param float  $readTimeout value in seconds (optional, default is 0 meaning unlimited)
         *
         * @return bool TRUE on success, FALSE on error
         *
         * @example
         * <pre>
         * $redis->connect('127.0.0.1', 6379);
         * $redis->connect('127.0.0.1');            // port 6379 by default
         * $redis->connect('127.0.0.1', 6379, 2.5); // 2.5 sec timeout.
         * $redis->connect('/tmp/redis.sock');      // unix domain socket.
         * </pre>
         */
        public function connect(
            $host,
            $port = 6379,
            $timeout = 0.0,
            $reserved = null,
            $retryInterval = 0,
            $readTimeout = 0.0
        ) {
        }

        /**
         * Connects to a Redis instance.
         *
         * @param string $host          can be a host, or the path to a unix domain socket
         * @param int    $port          optional
         * @param float  $timeout       value in seconds (optional, default is 0.0 meaning unlimited)
         * @param null   $reserved      should be null if $retry_interval is specified
         * @param int    $retryInterval retry interval in milliseconds
         * @param float  $readTimeout   value in seconds (optional, default is 0 meaning unlimited)
         *
         * @return bool TRUE on success, FALSE on error
         *
         * @see        connect()
         * @deprecated use Redis::connect()
         */
        public function open(
            $host,
            $port = 6379,
            $timeout = 0.0,
            $reserved = null,
            $retryInterval = 0,
            $readTimeout = 0.0
        ) {
        }

        /**
         * A method to determine if a phpredis object thinks it's connected to a server.
         *
         * @return bool Returns TRUE if phpredis thinks it's connected and FALSE if not
         */
        public function isConnected()
        {
        }

        /**
         * Retrieve our host or unix socket that we're connected to.
         *
         * @return bool|string The host or unix socket we're connected to or FALSE if we're not connected
         */
        public function getHost()
        {
        }

        /**
         * Get the port we're connected to.
         *
         * @return bool|int Returns the port we're connected to or FALSE if we're not connected
         */
        public function getPort()
        {
        }

        /**
         * Get the database number phpredis is pointed to.
         *
         * @return bool|int Returns the database number (int) phpredis thinks it's pointing to
         *                  or FALSE if we're not connected
         */
        public function getDbNum()
        {
        }

        /**
         * Get the (write) timeout in use for phpredis.
         *
         * @return bool|float The timeout (DOUBLE) specified in our connect call or FALSE if we're not connected
         */
        public function getTimeout()
        {
        }

        /**
         * Get the read timeout specified to phpredis or FALSE if we're not connected.
         *
         * @return bool|float Returns the read timeout (which can be set using setOption and Redis::OPT_READ_TIMEOUT)
         *                    or FALSE if we're not connected
         */
        public function getReadTimeout()
        {
        }

        /**
         * Gets the persistent ID that phpredis is using.
         *
         * @return bool|string|null Returns the persistent id phpredis is using
         *                          (which will only be set if connected with pconnect),
         *                          NULL if we're not using a persistent ID,
         *                          and FALSE if we're not connected
         */
        public function getPersistentID()
        {
        }

        /**
         * Get the password used to authenticate the phpredis connection.
         *
         * @return bool|string|null Returns the password used to authenticate a phpredis session or NULL if none was used,
         *                          and FALSE if we're not connected
         */
        public function getAuth()
        {
        }

        /**
         * Connects to a Redis instance or reuse a connection already established with pconnect/popen.
         *
         * The connection will not be closed on close or end of request until the php process ends.
         * So be patient on to many open FD's (specially on redis server side) when using persistent connections on
         * many servers connecting to one redis server.
         *
         * Also more than one persistent connection can be made identified by either host + port + timeout
         * or host + persistentId or unix socket + timeout.
         *
         * This feature is not available in threaded versions. pconnect and popen then working like their non persistent
         * equivalents.
         *
         * @param string $host          can be a host, or the path to a unix domain socket
         * @param int    $port          optional
         * @param float  $timeout       value in seconds (optional, default is 0 meaning unlimited)
         * @param string $persistentId  identity for the requested persistent connection
         * @param int    $retryInterval retry interval in milliseconds
         * @param float  $readTimeout   value in seconds (optional, default is 0 meaning unlimited)
         *
         * @return bool TRUE on success, FALSE on ertcnror
         *
         * @example
         * <pre>
         * $redis->pconnect('127.0.0.1', 6379);
         *
         * // port 6379 by default - same connection like before
         * $redis->pconnect('127.0.0.1');
         *
         * // 2.5 sec timeout and would be another connection than the two before.
         * $redis->pconnect('127.0.0.1', 6379, 2.5);
         *
         * // x is sent as persistent_id and would be another connection than the three before.
         * $redis->pconnect('127.0.0.1', 6379, 2.5, 'x');
         *
         * // unix domain socket - would be another connection than the four before.
         * $redis->pconnect('/tmp/redis.sock');
         * </pre>
         */
        public function pconnect(
            $host,
            $port = 6379,
            $timeout = 0.0,
            $persistentId = null,
            $retryInterval = 0,
            $readTimeout = 0.0
        ) {
        }

        /**
         * @param string $host
         * @param int    $port
         * @param float  $timeout
         * @param string $persistentId
         * @param int    $retryInterval
         * @param float  $readTimeout
         *
         * @return bool
         *
         * @deprecated use Redis::pconnect()
         * @see pconnect()
         */
        public function popen(
            $host,
            $port = 6379,
            $timeout = 0.0,
            $persistentId = '',
            $retryInterval = 0,
            $readTimeout = 0.0
        ) {
        }

        /**
         * Disconnects from the Redis instance.
         *
         * Note: Closing a persistent connection requires PhpRedis >= 4.2.0
         *
         * @since >= 4.2 Closing a persistent connection requires PhpRedis
         *
         * @return bool TRUE on success, FALSE on error
         */
        public function close()
        {
        }

        /**
         * Swap one Redis database with another atomically.
         *
         * Note: Requires Redis >= 4.0.0
         *
         * @return bool TRUE on success and FALSE on failure
         *
         * @see https://redis.io/commands/swapdb
         * @since >= 4.0
         *
         * @example
         * <pre>
         * // Swaps DB 0 with DB 1 atomically
         * $redis->swapdb(0, 1);
         * </pre>
         */
        public function swapdb(int $db1, int $db2)
        {
        }

        /**
         * Set client option.
         *
         * @param int   $option option name
         * @param mixed $value  option value
         *
         * @return bool TRUE on success, FALSE on error
         *
         * @example
         * <pre>
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);        // don't serialize data
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);         // use built-in serialize/unserialize
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_IGBINARY);    // use igBinary serialize/unserialize
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_MSGPACK);     // Use msgpack serialize/unserialize
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_JSON);        // Use json serialize/unserialize
         *
         * $redis->setOption(Redis::OPT_PREFIX, 'myAppName:');                      // use custom prefix on all keys
         *
         * // Options for the SCAN family of commands, indicating whether to abstract
         * // empty results from the user.  If set to SCAN_NORETRY (the default), phpredis
         * // will just issue one SCAN command at a time, sometimes returning an empty
         * // array of results.  If set to SCAN_RETRY, phpredis will retry the scan command
         * // until keys come back OR Redis returns an iterator of zero
         * $redis->setOption(Redis::OPT_SCAN, Redis::SCAN_NORETRY);
         * $redis->setOption(Redis::OPT_SCAN, Redis::SCAN_RETRY);
         * </pre>
         */
        public function setOption($option, $value)
        {
        }

        /**
         * Get client option.
         *
         * @param int $option parameter name
         *
         * @return mixed|null Parameter value
         *
         * @see setOption()
         *
         * @example
         * // return option value
         * $redis->getOption(Redis::OPT_SERIALIZER);
         */
        public function getOption($option)
        {
        }

        /**
         * Check the current connection status.
         *
         * @throws RedisException
         *
         * @return string STRING: +PONG on success.
         *                Throws a RedisException object on connectivity error, as described above.
         *
         * @see    https://redis.io/commands/ping
         */
        public function ping()
        {
        }

        /**
         * Echo the given string.
         *
         * @param string $message
         *
         * @return string Returns message
         *
         * @see    https://redis.io/commands/echo
         */
        public function echo($message)
        {
        }

        /**
         * Get the value related to the specified key.
         *
         * @param string $key
         *
         * @return bool|mixed|string If key didn't exist, FALSE is returned.
         *                           Otherwise, the value related to this key is returned
         *
         * @see    https://redis.io/commands/get
         *
         * @example
         * <pre>
         * $redis->set('key', 'hello');
         * $redis->get('key');
         *
         * // set and get with serializer
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_JSON);
         *
         * $redis->set('key', ['asd' => 'as', 'dd' => 123, 'b' => true]);
         * var_dump($redis->get('key'));
         * // Output:
         * array(3) {
         *  'asd' => string(2) "as"
         *  'dd' => int(123)
         *  'b' => bool(true)
         * }
         * </pre>
         */
        public function get($key)
        {
        }

        /**
         * Set the string value in argument as value of the key.
         *
         * @since If you're using Redis >= 2.6.12, you can pass extended options as explained in example
         *
         * @param string       $key
         * @param mixed|string $value   string if not used serializer
         * @param array|int    $timeout [optional] Calling setex() is preferred if you want a timeout.<br>
         *                              Since 2.6.12 it also supports different flags inside an array. Example ['NX', 'EX' => 60]<br>
         *                              - EX seconds -- Set the specified expire time, in seconds.<br>
         *                              - PX milliseconds -- Set the specified expire time, in milliseconds.<br>
         *                              - PX milliseconds -- Set the specified expire time, in milliseconds.<br>
         *                              - NX -- Only set the key if it does not already exist.<br>
         *                              - XX -- Only set the key if it already exist.<br>
         *                              <pre>
         *                              // Simple key -> value set
         *                              $redis->set('key', 'value');
         *
         * // Will redirect, and actually make an SETEX call
         * $redis->set('key','value', 10);
         *
         * // Will set the key, if it doesn't exist, with a ttl of 10 seconds
         * $redis->set('key', 'value', ['nx', 'ex' => 10]);
         *
         * // Will set a key, if it does exist, with a ttl of 1000 miliseconds
         * $redis->set('key', 'value', ['xx', 'px' => 1000]);
         * </pre>
         *
         * @return bool TRUE if the command is successful
         *
         * @see     https://redis.io/commands/set
         */
        public function set($key, $value, $timeout = null)
        {
        }

        /**
         * Set the string value in argument as value of the key, with a time to live.
         *
         * @param string       $key
         * @param int          $ttl
         * @param mixed|string $value
         *
         * @return bool TRUE if the command is successful
         *
         * @see    https://redis.io/commands/setex
         *
         * @example $redis->setex('key', 3600, 'value'); // sets key → value, with 1h TTL.
         */
        public function setex($key, $ttl, $value)
        {
        }

        /**
         * Set the value and expiration in milliseconds of a key.
         *
         * @see     setex()
         *
         * @param string       $key
         * @param int          $ttl,  in milliseconds
         * @param mixed|string $value
         *
         * @return bool TRUE if the command is successful
         *
         * @see    https://redis.io/commands/psetex
         *
         * @example $redis->psetex('key', 1000, 'value'); // sets key → value, with 1sec TTL.
         */
        public function psetex($key, $ttl, $value)
        {
        }

        /**
         * Set the string value in argument as value of the key if the key doesn't already exist in the database.
         *
         * @param string       $key
         * @param mixed|string $value
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/setnx
         *
         * @example
         * <pre>
         * $redis->setnx('key', 'value');   // return TRUE
         * $redis->setnx('key', 'value');   // return FALSE
         * </pre>
         */
        public function setnx($key, $value)
        {
        }

        /**
         * Remove specified keys.
         *
         * @param array|int|string $key1         An array of keys, or an undefined number of parameters, each a key: key1 key2 key3 ... keyN
         * @param int|string       ...$otherKeys
         *
         * @return int Number of keys deleted
         *
         * @see https://redis.io/commands/del
         *
         * @example
         * <pre>
         * $redis->set('key1', 'val1');
         * $redis->set('key2', 'val2');
         * $redis->set('key3', 'val3');
         * $redis->set('key4', 'val4');
         *
         * $redis->del('key1', 'key2');     // return 2
         * $redis->del(['key3', 'key4']);   // return 2
         * </pre>
         */
        public function del($key1, ...$otherKeys)
        {
        }

        /**
         * @see del()
         * @deprecated use Redis::del()
         *
         * @param array<string>|string $key1
         * @param string               $key2
         * @param string               $key3
         *
         * @return int Number of keys deleted
         */
        public function delete($key1, $key2 = null, $key3 = null)
        {
        }

        /**
         * Delete a key asynchronously in another thread. Otherwise it is just as DEL, but non blocking.
         *
         * @see del()
         *
         * @param array<string>|string $key1
         * @param string               $key2
         * @param string               $key3
         *
         * @return int number of keys unlinked
         *
         * @see    https://redis.io/commands/unlink
         *
         * @example
         * <pre>
         * $redis->set('key1', 'val1');
         * $redis->set('key2', 'val2');
         * $redis->set('key3', 'val3');
         * $redis->set('key4', 'val4');
         * $redis->unlink('key1', 'key2');          // return 2
         * $redis->unlink(array('key3', 'key4'));   // return 2
         * </pre>
         */
        public function unlink($key1, $key2 = null, $key3 = null)
        {
        }

        /**
         * Enter and exit transactional mode.
         *
         * @param int $mode Redis::MULTI|Redis::PIPELINE
         *                  Defaults to Redis::MULTI.
         *                  A Redis::MULTI block of commands runs as a single transaction;
         *                  a Redis::PIPELINE block is simply transmitted faster to the server, but without any guarantee of atomicity.
         *                  discard cancels a transaction.
         *
         * @return Redis returns the Redis instance and enters multi-mode.
         *               Once in multi-mode, all subsequent method calls return the same object until exec() is called.
         *
         * @see    https://redis.io/commands/multi
         *
         * @example
         * <pre>
         * $ret = $redis->multi()
         *      ->set('key1', 'val1')
         *      ->get('key1')
         *      ->set('key2', 'val2')
         *      ->get('key2')
         *      ->exec();
         *
         * //$ret == array (
         * //    0 => TRUE,
         * //    1 => 'val1',
         * //    2 => TRUE,
         * //    3 => 'val2');
         * </pre>
         */
        public function multi($mode = Redis::MULTI)
        {
        }

        /**
         * @return array|void
         *
         * @see multi()
         * @see https://redis.io/commands/exec
         */
        public function exec()
        {
        }

        /**
         * @see multi()
         * @see https://redis.io/commands/discard
         */
        public function discard()
        {
        }

        /**
         * Watches a key for modifications by another client. If the key is modified between WATCH and EXEC,
         * the MULTI/EXEC transaction will fail (return FALSE). unwatch cancels all the watching of all keys by this client.
         *
         * @param array<string>|string $key a list of keys
         *
         * @return void
         *
         * @see    https://redis.io/commands/watch
         *
         * @example
         * <pre>
         * $redis->watch('x');
         * // long code here during the execution of which other clients could well modify `x`
         * $ret = $redis->multi()
         *          ->incr('x')
         *          ->exec();
         * // $ret = FALSE if x has been modified between the call to WATCH and the call to EXEC.
         * </pre>
         */
        public function watch($key)
        {
        }

        /**
         * @see watch()
         * @see    https://redis.io/commands/unwatch
         */
        public function unwatch()
        {
        }

        /**
         * Subscribe to channels.
         *
         * Warning: this function will probably change in the future.
         *
         * @param array<string> $channels an array of channels to subscribe
         * @param array|string  $callback either a string or an array($instance, 'method_name').
         *                                The callback function receives 3 parameters: the redis instance, the channel name, and the message.
         *
         * @return mixed|null any non-null return value in the callback will be returned to the caller
         *
         * @see    https://redis.io/commands/subscribe
         *
         * @example
         * <pre>
         * function f($redis, $chan, $msg) {
         *  switch($chan) {
         *      case 'chan-1':
         *          ...
         *          break;
         *
         *      case 'chan-2':
         *                     ...
         *          break;
         *
         *      case 'chan-2':
         *          ...
         *          break;
         *      }
         * }
         *
         * $redis->subscribe(array('chan-1', 'chan-2', 'chan-3'), 'f'); // subscribe to 3 chans
         * </pre>
         */
        public function subscribe($channels, $callback)
        {
        }

        /**
         * Subscribe to channels by pattern.
         *
         * @param array        $patterns an array of glob-style patterns to subscribe
         * @param array|string $callback Either a string or an array with an object and method.
         *                               The callback will get four arguments ($redis, $pattern, $channel, $message)
         *
         * @see    https://redis.io/commands/psubscribe
         *
         * @example
         * <pre>
         * function psubscribe($redis, $pattern, $chan, $msg) {
         *  echo "Pattern: $pattern\n";
         *  echo "Channel: $chan\n";
         *  echo "Payload: $msg\n";
         * }
         * </pre>
         */
        public function psubscribe($patterns, $callback)
        {
        }

        /**
         * Publish messages to channels.
         *
         * Warning: this function will probably change in the future.
         *
         * @param string $channel a channel to publish to
         * @param string $message string
         *
         * @return int Number of clients that received the message
         *
         * @see    https://redis.io/commands/publish
         *
         * @example $redis->publish('chan-1', 'hello, world!'); // send message.
         */
        public function publish($channel, $message)
        {
        }

        /**
         * A command allowing you to get information on the Redis pub/sub system.
         *
         * @param string       $keyword  String, which can be: "channels", "numsub", or "numpat"
         * @param array|string $argument Optional, variant.
         *                               For the "channels" subcommand, you can pass a string pattern.
         *                               For "numsub" an array of channel names
         *
         * @return array|int Either an integer or an array.
         *                   - channels  Returns an array where the members are the matching channels.
         *                   - numsub    Returns a key/value array where the keys are channel names and
         *                   values are their counts.
         *                   - numpat    Integer return containing the number active pattern subscriptions
         *
         * @see    https://redis.io/commands/pubsub
         *
         * @example
         * <pre>
         * $redis->pubsub('channels'); // All channels
         * $redis->pubsub('channels', '*pattern*'); // Just channels matching your pattern
         * $redis->pubsub('numsub', array('chan1', 'chan2')); // Get subscriber counts for 'chan1' and 'chan2'
         * $redis->pubsub('numpat'); // Get the number of pattern subscribers
         * </pre>
         */
        public function pubsub($keyword, $argument)
        {
        }

        /**
         * Stop listening for messages posted to the given channels.
         *
         * @param array $channels an array of channels to usubscribe
         *
         * @see    https://redis.io/commands/unsubscribe
         */
        public function unsubscribe($channels = null)
        {
        }

        /**
         * Stop listening for messages posted to the given channels.
         *
         * @param array $patterns an array of glob-style patterns to unsubscribe
         *
         * @see https://redis.io/commands/punsubscribe
         */
        public function punsubscribe($patterns = null)
        {
        }

        /**
         * Verify if the specified key/keys exists.
         *
         * This function took a single argument and returned TRUE or FALSE in phpredis versions < 4.0.0.
         *
         * @since >= 4.0 Returned int, if < 4.0 returned bool
         *
         * @param array<string>|string $key
         *
         * @return bool|int The number of keys tested that do exist
         *
         * @see https://redis.io/commands/exists
         * @see https://github.com/phpredis/phpredis#exists
         *
         * @example
         * <pre>
         * $redis->exists('key'); // 1
         * $redis->exists('NonExistingKey'); // 0
         *
         * $redis->mset(['foo' => 'foo', 'bar' => 'bar', 'baz' => 'baz']);
         * $redis->exists(['foo', 'bar', 'baz]); // 3
         * $redis->exists('foo', 'bar', 'baz'); // 3
         * </pre>
         */
        public function exists($key)
        {
        }

        /**
         * Increment the number stored at key by one.
         *
         * @param string $key
         *
         * @return int the new value
         *
         * @see    https://redis.io/commands/incr
         *
         * @example
         * <pre>
         * $redis->incr('key1'); // key1 didn't exists, set to 0 before the increment and now has the value 1
         * $redis->incr('key1'); // 2
         * $redis->incr('key1'); // 3
         * $redis->incr('key1'); // 4
         * </pre>
         */
        public function incr($key)
        {
        }

        /**
         * Increment the float value of a key by the given amount.
         *
         * @param string $key
         * @param float  $increment
         *
         * @return float
         *
         * @see    https://redis.io/commands/incrbyfloat
         *
         * @example
         * <pre>
         * $redis->set('x', 3);
         * $redis->incrByFloat('x', 1.5);   // float(4.5)
         * $redis->get('x');                // float(4.5)
         * </pre>
         */
        public function incrByFloat($key, $increment)
        {
        }

        /**
         * Increment the number stored at key by one.
         * If the second argument is filled, it will be used as the integer value of the increment.
         *
         * @param string $key   key
         * @param int    $value value that will be added to key (only for incrBy)
         *
         * @return int the new value
         *
         * @see    https://redis.io/commands/incrby
         *
         * @example
         * <pre>
         * $redis->incr('key1');        // key1 didn't exists, set to 0 before the increment and now has the value 1
         * $redis->incr('key1');        // 2
         * $redis->incr('key1');        // 3
         * $redis->incr('key1');        // 4
         * $redis->incrBy('key1', 10);  // 14
         * </pre>
         */
        public function incrBy($key, $value)
        {
        }

        /**
         * Decrement the number stored at key by one.
         *
         * @param string $key
         *
         * @return int the new value
         *
         * @see    https://redis.io/commands/decr
         *
         * @example
         * <pre>
         * $redis->decr('key1'); // key1 didn't exists, set to 0 before the increment and now has the value -1
         * $redis->decr('key1'); // -2
         * $redis->decr('key1'); // -3
         * </pre>
         */
        public function decr($key)
        {
        }

        /**
         * Decrement the number stored at key by one.
         * If the second argument is filled, it will be used as the integer value of the decrement.
         *
         * @param string $key
         * @param int    $value that will be substracted to key (only for decrBy)
         *
         * @return int the new value
         *
         * @see    https://redis.io/commands/decrby
         *
         * @example
         * <pre>
         * $redis->decr('key1');        // key1 didn't exists, set to 0 before the increment and now has the value -1
         * $redis->decr('key1');        // -2
         * $redis->decr('key1');        // -3
         * $redis->decrBy('key1', 10);  // -13
         * </pre>
         */
        public function decrBy($key, $value)
        {
        }

        /**
         * Adds the string values to the head (left) of the list.
         * Creates the list if the key didn't exist.
         * If the key exists and is not a list, FALSE is returned.
         *
         * @param string       $key
         * @param mixed|string $value1... Variadic list of values to push in key, if dont used serialized, used string
         *
         * @return bool|int The new length of the list in case of success, FALSE in case of Failure
         *
         * @see https://redis.io/commands/lpush
         *
         * @example
         * <pre>
         * $redis->lPush('l', 'v1', 'v2', 'v3', 'v4')   // int(4)
         * var_dump( $redis->lRange('l', 0, -1) );
         * // Output:
         * // array(4) {
         * //   [0]=> string(2) "v4"
         * //   [1]=> string(2) "v3"
         * //   [2]=> string(2) "v2"
         * //   [3]=> string(2) "v1"
         * // }
         * </pre>
         */
        public function lPush($key, ...$value1)
        {
        }

        /**
         * Adds the string values to the tail (right) of the list.
         * Creates the list if the key didn't exist.
         * If the key exists and is not a list, FALSE is returned.
         *
         * @param string       $key
         * @param mixed|string $value1... Variadic list of values to push in key, if dont used serialized, used string
         *
         * @return bool|int The new length of the list in case of success, FALSE in case of Failure
         *
         * @see    https://redis.io/commands/rpush
         *
         * @example
         * <pre>
         * $redis->rPush('l', 'v1', 'v2', 'v3', 'v4');    // int(4)
         * var_dump( $redis->lRange('l', 0, -1) );
         * // Output:
         * // array(4) {
         * //   [0]=> string(2) "v1"
         * //   [1]=> string(2) "v2"
         * //   [2]=> string(2) "v3"
         * //   [3]=> string(2) "v4"
         * // }
         * </pre>
         */
        public function rPush($key, ...$value1)
        {
        }

        /**
         * Adds the string value to the head (left) of the list if the list exists.
         *
         * @param string       $key
         * @param mixed|string $value String, value to push in key
         *
         * @return bool|int the new length of the list in case of success, FALSE in case of Failure
         *
         * @see    https://redis.io/commands/lpushx
         *
         * @example
         * <pre>
         * $redis->del('key1');
         * $redis->lPushx('key1', 'A');     // returns 0
         * $redis->lPush('key1', 'A');      // returns 1
         * $redis->lPushx('key1', 'B');     // returns 2
         * $redis->lPushx('key1', 'C');     // returns 3
         * // key1 now points to the following list: [ 'A', 'B', 'C' ]
         * </pre>
         */
        public function lPushx($key, $value)
        {
        }

        /**
         * Adds the string value to the tail (right) of the list if the ist exists. FALSE in case of Failure.
         *
         * @param string       $key
         * @param mixed|string $value String, value to push in key
         *
         * @return bool|int the new length of the list in case of success, FALSE in case of Failure
         *
         * @see    https://redis.io/commands/rpushx
         *
         * @example
         * <pre>
         * $redis->del('key1');
         * $redis->rPushx('key1', 'A'); // returns 0
         * $redis->rPush('key1', 'A'); // returns 1
         * $redis->rPushx('key1', 'B'); // returns 2
         * $redis->rPushx('key1', 'C'); // returns 3
         * // key1 now points to the following list: [ 'A', 'B', 'C' ]
         * </pre>
         */
        public function rPushx($key, $value)
        {
        }

        /**
         * Returns and removes the first element of the list.
         *
         * @param string $key
         *
         * @return bool|mixed if command executed successfully BOOL FALSE in case of failure (empty list)
         *
         * @see    https://redis.io/commands/lpop
         *
         * @example
         * <pre>
         * $redis->rPush('key1', 'A');
         * $redis->rPush('key1', 'B');
         * $redis->rPush('key1', 'C');  // key1 => [ 'A', 'B', 'C' ]
         * $redis->lPop('key1');        // key1 => [ 'B', 'C' ]
         * </pre>
         */
        public function lPop($key)
        {
        }

        /**
         * Returns and removes the last element of the list.
         *
         * @param string $key
         *
         * @return bool|mixed if command executed successfully BOOL FALSE in case of failure (empty list)
         *
         * @see    https://redis.io/commands/rpop
         *
         * @example
         * <pre>
         * $redis->rPush('key1', 'A');
         * $redis->rPush('key1', 'B');
         * $redis->rPush('key1', 'C');  // key1 => [ 'A', 'B', 'C' ]
         * $redis->rPop('key1');        // key1 => [ 'A', 'B' ]
         * </pre>
         */
        public function rPop($key)
        {
        }

        /**
         * Is a blocking lPop primitive. If at least one of the lists contains at least one element,
         * the element will be popped from the head of the list and returned to the caller.
         * Il all the list identified by the keys passed in arguments are empty, blPop will block
         * during the specified timeout until an element is pushed to one of those lists. This element will be popped.
         *
         * @param array<string>|string $keys    String array containing the keys of the lists OR variadic list of strings
         * @param int                  $timeout Timeout is always the required final parameter
         *
         * @return array ['listName', 'element']
         *
         * @see    https://redis.io/commands/blpop
         *
         * @example
         * <pre>
         * // Non blocking feature
         * $redis->lPush('key1', 'A');
         * $redis->del('key2');
         *
         * $redis->blPop('key1', 'key2', 10);        // array('key1', 'A')
         * // OR
         * $redis->blPop(['key1', 'key2'], 10);      // array('key1', 'A')
         *
         * $redis->brPop('key1', 'key2', 10);        // array('key1', 'A')
         * // OR
         * $redis->brPop(['key1', 'key2'], 10); // array('key1', 'A')
         *
         * // Blocking feature
         *
         * // process 1
         * $redis->del('key1');
         * $redis->blPop('key1', 10);
         * // blocking for 10 seconds
         *
         * // process 2
         * $redis->lPush('key1', 'A');
         *
         * // process 1
         * // array('key1', 'A') is returned
         * </pre>
         */
        public function blPop($keys, $timeout)
        {
        }

        /**
         * Is a blocking rPop primitive. If at least one of the lists contains at least one element,
         * the element will be popped from the head of the list and returned to the caller.
         * Il all the list identified by the keys passed in arguments are empty, brPop will
         * block during the specified timeout until an element is pushed to one of those lists. T
         * his element will be popped.
         *
         * @param array<string>|string $keys    String array containing the keys of the lists OR variadic list of strings
         * @param int                  $timeout Timeout is always the required final parameter
         *
         * @return array ['listName', 'element']
         *
         * @see    https://redis.io/commands/brpop
         *
         * @example
         * <pre>
         * // Non blocking feature
         * $redis->lPush('key1', 'A');
         * $redis->del('key2');
         *
         * $redis->blPop('key1', 'key2', 10); // array('key1', 'A')
         * // OR
         * $redis->blPop(array('key1', 'key2'), 10); // array('key1', 'A')
         *
         * $redis->brPop('key1', 'key2', 10); // array('key1', 'A')
         * // OR
         * $redis->brPop(array('key1', 'key2'), 10); // array('key1', 'A')
         *
         * // Blocking feature
         *
         * // process 1
         * $redis->del('key1');
         * $redis->blPop('key1', 10);
         * // blocking for 10 seconds
         *
         * // process 2
         * $redis->lPush('key1', 'A');
         *
         * // process 1
         * // array('key1', 'A') is returned
         * </pre>
         */
        public function brPop(array $keys, $timeout)
        {
        }

        /**
         * Returns the size of a list identified by Key. If the list didn't exist or is empty,
         * the command returns 0. If the data type identified by Key is not a list, the command return FALSE.
         *
         * @param string $key
         *
         * @return bool|int The size of the list identified by Key exists.
         *                  bool FALSE if the data type identified by Key is not list
         *
         * @see    https://redis.io/commands/llen
         *
         * @example
         * <pre>
         * $redis->rPush('key1', 'A');
         * $redis->rPush('key1', 'B');
         * $redis->rPush('key1', 'C'); // key1 => [ 'A', 'B', 'C' ]
         * $redis->lLen('key1');       // 3
         * $redis->rPop('key1');
         * $redis->lLen('key1');       // 2
         * </pre>
         */
        public function lLen($key)
        {
        }

        /**
         * @see lLen()
         * @see https://redis.io/commands/llen
         * @deprecated use Redis::lLen()
         *
         * @param string $key
         *
         * @return int The size of the list identified by Key exists
         */
        public function lSize($key)
        {
        }

        /**
         * Return the specified element of the list stored at the specified key.
         * 0 the first element, 1 the second ... -1 the last element, -2 the penultimate ...
         * Return FALSE in case of a bad index or a key that doesn't point to a list.
         *
         * @param string $key
         * @param int    $index
         *
         * @return bool|mixed the element at this index
         *
         * Bool FALSE if the key identifies a non-string data type, or no value corresponds to this index in the list Key
         *
         * @see    https://redis.io/commands/lindex
         *
         * @example
         * <pre>
         * $redis->rPush('key1', 'A');
         * $redis->rPush('key1', 'B');
         * $redis->rPush('key1', 'C');  // key1 => [ 'A', 'B', 'C' ]
         * $redis->lIndex('key1', 0);     // 'A'
         * $redis->lIndex('key1', -1);    // 'C'
         * $redis->lIndex('key1', 10);    // `FALSE`
         * </pre>
         */
        public function lIndex($key, $index)
        {
        }

        /**
         * @see lIndex()
         * @see https://redis.io/commands/lindex
         * @deprecated use Redis::lIndex()
         *
         * @param string $key
         * @param int    $index
         *
         * @return bool|mixed the element at this index
         */
        public function lGet($key, $index)
        {
        }

        /**
         * Set the list at index with the new value.
         *
         * @param string $key
         * @param int    $index
         * @param string $value
         *
         * @return bool TRUE if the new value is setted.
         *              FALSE if the index is out of range, or data type identified by key is not a list.
         *
         * @see    https://redis.io/commands/lset
         *
         * @example
         * <pre>
         * $redis->rPush('key1', 'A');
         * $redis->rPush('key1', 'B');
         * $redis->rPush('key1', 'C');    // key1 => [ 'A', 'B', 'C' ]
         * $redis->lIndex('key1', 0);     // 'A'
         * $redis->lSet('key1', 0, 'X');
         * $redis->lIndex('key1', 0);     // 'X'
         * </pre>
         */
        public function lSet($key, $index, $value)
        {
        }

        /**
         * Returns the specified elements of the list stored at the specified key in
         * the range [start, end]. start and stop are interpretated as indices: 0 the first element,
         * 1 the second ... -1 the last element, -2 the penultimate ...
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         *
         * @return array containing the values in specified range
         *
         * @see    https://redis.io/commands/lrange
         *
         * @example
         * <pre>
         * $redis->rPush('key1', 'A');
         * $redis->rPush('key1', 'B');
         * $redis->rPush('key1', 'C');
         * $redis->lRange('key1', 0, -1); // array('A', 'B', 'C')
         * </pre>
         */
        public function lRange($key, $start, $end)
        {
        }

        /**
         * @see lRange()
         * @see https://redis.io/commands/lrange
         * @deprecated use Redis::lRange()
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         *
         * @return array
         */
        public function lGetRange($key, $start, $end)
        {
        }

        /**
         * Trims an existing list so that it will contain only a specified range of elements.
         *
         * @param string $key
         * @param int    $start
         * @param int    $stop
         *
         * @return array|bool Bool return FALSE if the key identify a non-list value
         *
         * @see        https://redis.io/commands/ltrim
         *
         * @example
         * <pre>
         * $redis->rPush('key1', 'A');
         * $redis->rPush('key1', 'B');
         * $redis->rPush('key1', 'C');
         * $redis->lRange('key1', 0, -1); // array('A', 'B', 'C')
         * $redis->lTrim('key1', 0, 1);
         * $redis->lRange('key1', 0, -1); // array('A', 'B')
         * </pre>
         */
        public function lTrim($key, $start, $stop)
        {
        }

        /**
         * @see lTrim()
         * @see  https://redis.io/commands/ltrim
         * @deprecated use Redis::lTrim()
         *
         * @param string $key
         * @param int    $start
         * @param int    $stop
         */
        public function listTrim($key, $start, $stop)
        {
        }

        /**
         * Removes the first count occurences of the value element from the list.
         * If count is zero, all the matching elements are removed. If count is negative,
         * elements are removed from tail to head.
         *
         * @param string $key
         * @param string $value
         * @param int    $count
         *
         * @return bool|int the number of elements to remove
         *                  bool FALSE if the value identified by key is not a list
         *
         * @see    https://redis.io/commands/lrem
         *
         * @example
         * <pre>
         * $redis->lPush('key1', 'A');
         * $redis->lPush('key1', 'B');
         * $redis->lPush('key1', 'C');
         * $redis->lPush('key1', 'A');
         * $redis->lPush('key1', 'A');
         *
         * $redis->lRange('key1', 0, -1);   // array('A', 'A', 'C', 'B', 'A')
         * $redis->lRem('key1', 'A', 2);    // 2
         * $redis->lRange('key1', 0, -1);   // array('C', 'B', 'A')
         * </pre>
         */
        public function lRem($key, $value, $count)
        {
        }

        /**
         * @see lRem
         * @see https://redis.io/commands/lremove
         * @deprecated use Redis::lRem()
         *
         * @param string $key
         * @param string $value
         * @param int    $count
         */
        public function lRemove($key, $value, $count)
        {
        }

        /**
         * Insert value in the list before or after the pivot value. the parameter options
         * specify the position of the insert (before or after). If the list didn't exists,
         * or the pivot didn't exists, the value is not inserted.
         *
         * @param string       $key
         * @param int          $position Redis::BEFORE | Redis::AFTER
         * @param string       $pivot
         * @param mixed|string $value
         *
         * @return int the number of the elements in the list, -1 if the pivot didn't exists
         *
         * @see    https://redis.io/commands/linsert
         *
         * @example
         * <pre>
         * $redis->del('key1');
         * $redis->lInsert('key1', Redis::AFTER, 'A', 'X');     // 0
         *
         * $redis->lPush('key1', 'A');
         * $redis->lPush('key1', 'B');
         * $redis->lPush('key1', 'C');
         *
         * $redis->lInsert('key1', Redis::BEFORE, 'C', 'X');    // 4
         * $redis->lRange('key1', 0, -1);                       // array('A', 'B', 'X', 'C')
         *
         * $redis->lInsert('key1', Redis::AFTER, 'C', 'Y');     // 5
         * $redis->lRange('key1', 0, -1);                       // array('A', 'B', 'X', 'C', 'Y')
         *
         * $redis->lInsert('key1', Redis::AFTER, 'W', 'value'); // -1
         * </pre>
         */
        public function lInsert($key, $position, $pivot, $value)
        {
        }

        /**
         * Adds a values to the set value stored at key.
         *
         * @param string       $key       Required key
         * @param mixed|string ...$value1 Variadic list of values
         *
         * @return bool|int The number of elements added to the set.
         *                  If this value is already in the set, FALSE is returned
         *
         * @see    https://redis.io/commands/sadd
         *
         * @example
         * <pre>
         * $redis->sAdd('k', 'v1');                // int(1)
         * $redis->sAdd('k', 'v1', 'v2', 'v3');    // int(2)
         * </pre>
         */
        public function sAdd($key, ...$value1)
        {
        }

        /**
         * Removes the specified members from the set value stored at key.
         *
         * @param string       $key
         * @param mixed|string ...$member1 Variadic list of members
         *
         * @return int The number of elements removed from the set
         *
         * @see    https://redis.io/commands/srem
         *
         * @example
         * <pre>
         * var_dump( $redis->sAdd('k', 'v1', 'v2', 'v3') );    // int(3)
         * var_dump( $redis->sRem('k', 'v2', 'v3') );          // int(2)
         * var_dump( $redis->sMembers('k') );
         * //// Output:
         * // array(1) {
         * //   [0]=> string(2) "v1"
         * // }
         * </pre>
         */
        public function sRem($key, ...$member1)
        {
        }

        /**
         * @see sRem()
         * @see    https://redis.io/commands/srem
         * @deprecated use Redis::sRem()
         *
         * @param string       $key
         * @param mixed|string ...$member1
         */
        public function sRemove($key, ...$member1)
        {
        }

        /**
         * Moves the specified member from the set at srcKey to the set at dstKey.
         *
         * @param string       $srcKey
         * @param string       $dstKey
         * @param mixed|string $member
         *
         * @return bool If the operation is successful, return TRUE.
         *              If the srcKey and/or dstKey didn't exist, and/or the member didn't exist in srcKey, FALSE is returned.
         *
         * @see    https://redis.io/commands/smove
         *
         * @example
         * <pre>
         * $redis->sAdd('key1' , 'set11');
         * $redis->sAdd('key1' , 'set12');
         * $redis->sAdd('key1' , 'set13');          // 'key1' => {'set11', 'set12', 'set13'}
         * $redis->sAdd('key2' , 'set21');
         * $redis->sAdd('key2' , 'set22');          // 'key2' => {'set21', 'set22'}
         * $redis->sMove('key1', 'key2', 'set13');  // 'key1' =>  {'set11', 'set12'}
         *                                          // 'key2' =>  {'set21', 'set22', 'set13'}
         * </pre>
         */
        public function sMove($srcKey, $dstKey, $member)
        {
        }

        /**
         * Checks if value is a member of the set stored at the key key.
         *
         * @param string       $key
         * @param mixed|string $value
         *
         * @return bool TRUE if value is a member of the set at key key, FALSE otherwise
         *
         * @see    https://redis.io/commands/sismember
         *
         * @example
         * <pre>
         * $redis->sAdd('key1' , 'set1');
         * $redis->sAdd('key1' , 'set2');
         * $redis->sAdd('key1' , 'set3'); // 'key1' => {'set1', 'set2', 'set3'}
         *
         * $redis->sIsMember('key1', 'set1'); // TRUE
         * $redis->sIsMember('key1', 'setX'); // FALSE
         * </pre>
         */
        public function sIsMember($key, $value)
        {
        }

        /**
         * @see sIsMember()
         * @see    https://redis.io/commands/sismember
         * @deprecated use Redis::sIsMember()
         *
         * @param string       $key
         * @param mixed|string $value
         */
        public function sContains($key, $value)
        {
        }

        /**
         * Returns the cardinality of the set identified by key.
         *
         * @param string $key
         *
         * @return int the cardinality of the set identified by key, 0 if the set doesn't exist
         *
         * @see    https://redis.io/commands/scard
         *
         * @example
         * <pre>
         * $redis->sAdd('key1' , 'set1');
         * $redis->sAdd('key1' , 'set2');
         * $redis->sAdd('key1' , 'set3');   // 'key1' => {'set1', 'set2', 'set3'}
         * $redis->sCard('key1');           // 3
         * $redis->sCard('keyX');           // 0
         * </pre>
         */
        public function sCard($key)
        {
        }

        /**
         * Removes and returns a random element from the set value at Key.
         *
         * @param string $key
         * @param int    $count [optional]
         *
         * @return array|bool|mixed|string "popped" values
         *                                 bool FALSE if set identified by key is empty or doesn't exist
         *
         * @see    https://redis.io/commands/spop
         *
         * @example
         * <pre>
         * $redis->sAdd('key1' , 'set1');
         * $redis->sAdd('key1' , 'set2');
         * $redis->sAdd('key1' , 'set3');   // 'key1' => {'set3', 'set1', 'set2'}
         * $redis->sPop('key1');            // 'set1', 'key1' => {'set3', 'set2'}
         * $redis->sPop('key1');            // 'set3', 'key1' => {'set2'}
         *
         * // With count
         * $redis->sAdd('key2', 'set1', 'set2', 'set3');
         * var_dump( $redis->sPop('key2', 3) ); // Will return all members but in no particular order
         *
         * // array(3) {
         * //   [0]=> string(4) "set2"
         * //   [1]=> string(4) "set3"
         * //   [2]=> string(4) "set1"
         * // }
         * </pre>
         */
        public function sPop($key, $count = 1)
        {
        }

        /**
         * Returns a random element(s) from the set value at Key, without removing it.
         *
         * @param string $key
         * @param int    $count [optional]
         *
         * @return array|bool|mixed|string value(s) from the set
         *                                 bool FALSE if set identified by key is empty or doesn't exist and count argument isn't passed
         *
         * @see    https://redis.io/commands/srandmember
         *
         * @example
         * <pre>
         * $redis->sAdd('key1' , 'one');
         * $redis->sAdd('key1' , 'two');
         * $redis->sAdd('key1' , 'three');              // 'key1' => {'one', 'two', 'three'}
         *
         * var_dump( $redis->sRandMember('key1') );     // 'key1' => {'one', 'two', 'three'}
         *
         * // string(5) "three"
         *
         * var_dump( $redis->sRandMember('key1', 2) );  // 'key1' => {'one', 'two', 'three'}
         *
         * // array(2) {
         * //   [0]=> string(2) "one"
         * //   [1]=> string(5) "three"
         * // }
         * </pre>
         */
        public function sRandMember($key, $count = 1)
        {
        }

        /**
         * Returns the members of a set resulting from the intersection of all the sets
         * held at the specified keys. If just a single key is specified, then this command
         * produces the members of this set. If one of the keys is missing, FALSE is returned.
         *
         * @param string $key1         keys identifying the different sets on which we will apply the intersection
         * @param string ...$otherKeys variadic list of keys
         *
         * @return array contain the result of the intersection between those keys
         *               If the intersection between the different sets is empty, the return value will be empty array
         *
         * @see    https://redis.io/commands/sinter
         *
         * @example
         * <pre>
         * $redis->sAdd('key1', 'val1');
         * $redis->sAdd('key1', 'val2');
         * $redis->sAdd('key1', 'val3');
         * $redis->sAdd('key1', 'val4');
         *
         * $redis->sAdd('key2', 'val3');
         * $redis->sAdd('key2', 'val4');
         *
         * $redis->sAdd('key3', 'val3');
         * $redis->sAdd('key3', 'val4');
         *
         * var_dump($redis->sInter('key1', 'key2', 'key3'));
         *
         * //array(2) {
         * //  [0]=>
         * //  string(4) "val4"
         * //  [1]=>
         * //  string(4) "val3"
         * //}
         * </pre>
         */
        public function sInter($key1, ...$otherKeys)
        {
        }

        /**
         * Performs a sInter command and stores the result in a new set.
         *
         * @param string $dstKey       the key to store the diff into
         * @param string $key1         keys identifying the different sets on which we will apply the intersection
         * @param string ...$otherKeys variadic list of keys
         *
         * @return bool|int The cardinality of the resulting set, or FALSE in case of a missing key
         *
         * @see    https://redis.io/commands/sinterstore
         *
         * @example
         * <pre>
         * $redis->sAdd('key1', 'val1');
         * $redis->sAdd('key1', 'val2');
         * $redis->sAdd('key1', 'val3');
         * $redis->sAdd('key1', 'val4');
         *
         * $redis->sAdd('key2', 'val3');
         * $redis->sAdd('key2', 'val4');
         *
         * $redis->sAdd('key3', 'val3');
         * $redis->sAdd('key3', 'val4');
         *
         * var_dump($redis->sInterStore('output', 'key1', 'key2', 'key3'));
         * var_dump($redis->sMembers('output'));
         *
         * //int(2)
         * //
         * //array(2) {
         * //  [0]=>
         * //  string(4) "val4"
         * //  [1]=>
         * //  string(4) "val3"
         * //}
         * </pre>
         */
        public function sInterStore($dstKey, $key1, ...$otherKeys)
        {
        }

        /**
         * Performs the union between N sets and returns it.
         *
         * @param string $key1         first key for union
         * @param string ...$otherKeys variadic list of keys corresponding to sets in redis
         *
         * @return array string[] The union of all these sets
         *
         * @see    https://redis.io/commands/sunionstore
         *
         * @example
         * <pre>
         * $redis->sAdd('s0', '1');
         * $redis->sAdd('s0', '2');
         * $redis->sAdd('s1', '3');
         * $redis->sAdd('s1', '1');
         * $redis->sAdd('s2', '3');
         * $redis->sAdd('s2', '4');
         *
         * var_dump($redis->sUnion('s0', 's1', 's2'));
         *
         * array(4) {
         * //  [0]=>
         * //  string(1) "3"
         * //  [1]=>
         * //  string(1) "4"
         * //  [2]=>
         * //  string(1) "1"
         * //  [3]=>
         * //  string(1) "2"
         * //}
         * </pre>
         */
        public function sUnion($key1, ...$otherKeys)
        {
        }

        /**
         * Performs the same action as sUnion, but stores the result in the first key.
         *
         * @param string $dstKey       the key to store the diff into
         * @param string $key1         first key for union
         * @param string ...$otherKeys variadic list of keys corresponding to sets in redis
         *
         * @return int Any number of keys corresponding to sets in redis
         *
         * @see    https://redis.io/commands/sunionstore
         *
         * @example
         * <pre>
         * $redis->del('s0', 's1', 's2');
         *
         * $redis->sAdd('s0', '1');
         * $redis->sAdd('s0', '2');
         * $redis->sAdd('s1', '3');
         * $redis->sAdd('s1', '1');
         * $redis->sAdd('s2', '3');
         * $redis->sAdd('s2', '4');
         *
         * var_dump($redis->sUnionStore('dst', 's0', 's1', 's2'));
         * var_dump($redis->sMembers('dst'));
         *
         * //int(4)
         * //array(4) {
         * //  [0]=>
         * //  string(1) "3"
         * //  [1]=>
         * //  string(1) "4"
         * //  [2]=>
         * //  string(1) "1"
         * //  [3]=>
         * //  string(1) "2"
         * //}
         * </pre>
         */
        public function sUnionStore($dstKey, $key1, ...$otherKeys)
        {
        }

        /**
         * Performs the difference between N sets and returns it.
         *
         * @param string $key1         first key for diff
         * @param string ...$otherKeys variadic list of keys corresponding to sets in redis
         *
         * @return array string[] The difference of the first set will all the others
         *
         * @see    https://redis.io/commands/sdiff
         *
         * @example
         * <pre>
         * $redis->del('s0', 's1', 's2');
         *
         * $redis->sAdd('s0', '1');
         * $redis->sAdd('s0', '2');
         * $redis->sAdd('s0', '3');
         * $redis->sAdd('s0', '4');
         *
         * $redis->sAdd('s1', '1');
         * $redis->sAdd('s2', '3');
         *
         * var_dump($redis->sDiff('s0', 's1', 's2'));
         *
         * //array(2) {
         * //  [0]=>
         * //  string(1) "4"
         * //  [1]=>
         * //  string(1) "2"
         * //}
         * </pre>
         */
        public function sDiff($key1, ...$otherKeys)
        {
        }

        /**
         * Performs the same action as sDiff, but stores the result in the first key.
         *
         * @param string $dstKey       the key to store the diff into
         * @param string $key1         first key for diff
         * @param string ...$otherKeys variadic list of keys corresponding to sets in redis
         *
         * @return bool|int The cardinality of the resulting set, or FALSE in case of a missing key
         *
         * @see    https://redis.io/commands/sdiffstore
         *
         * @example
         * <pre>
         * $redis->del('s0', 's1', 's2');
         *
         * $redis->sAdd('s0', '1');
         * $redis->sAdd('s0', '2');
         * $redis->sAdd('s0', '3');
         * $redis->sAdd('s0', '4');
         *
         * $redis->sAdd('s1', '1');
         * $redis->sAdd('s2', '3');
         *
         * var_dump($redis->sDiffStore('dst', 's0', 's1', 's2'));
         * var_dump($redis->sMembers('dst'));
         *
         * //int(2)
         * //array(2) {
         * //  [0]=>
         * //  string(1) "4"
         * //  [1]=>
         * //  string(1) "2"
         * //}
         * </pre>
         */
        public function sDiffStore($dstKey, $key1, ...$otherKeys)
        {
        }

        /**
         * Returns the contents of a set.
         *
         * @param string $key
         *
         * @return array An array of elements, the contents of the set
         *
         * @see    https://redis.io/commands/smembers
         *
         * @example
         * <pre>
         * $redis->del('s');
         * $redis->sAdd('s', 'a');
         * $redis->sAdd('s', 'b');
         * $redis->sAdd('s', 'a');
         * $redis->sAdd('s', 'c');
         * var_dump($redis->sMembers('s'));
         *
         * //array(3) {
         * //  [0]=>
         * //  string(1) "c"
         * //  [1]=>
         * //  string(1) "a"
         * //  [2]=>
         * //  string(1) "b"
         * //}
         * // The order is random and corresponds to redis' own internal representation of the set structure.
         * </pre>
         */
        public function sMembers($key)
        {
        }

        /**
         * @see sMembers()
         * @see    https://redis.io/commands/smembers
         * @deprecated use Redis::sMembers()
         *
         * @param string $key
         *
         * @return array An array of elements, the contents of the set
         */
        public function sGetMembers($key)
        {
        }

        /**
         * Scan a set for members.
         *
         * @param string $key      the set to search
         * @param int    $iterator LONG (reference) to the iterator as we go
         * @param string $pattern  string, optional pattern to match against
         * @param int    $count    How many members to return at a time (Redis might return a different amount)
         *
         * @return array|bool PHPRedis will return an array of keys or FALSE when we're done iterating
         *
         * @see    https://redis.io/commands/sscan
         *
         * @example
         * <pre>
         * $iterator = null;
         * while ($members = $redis->sScan('set', $iterator)) {
         *     foreach ($members as $member) {
         *         echo $member . PHP_EOL;
         *     }
         * }
         * </pre>
         */
        public function sScan($key, &$iterator, $pattern = null, $count = 0)
        {
        }

        /**
         * Sets a value and returns the previous entry at that key.
         *
         * @param string       $key
         * @param mixed|string $value
         *
         * @return mixed|string A string (mixed, if used serializer), the previous value located at this key
         *
         * @see    https://redis.io/commands/getset
         *
         * @example
         * <pre>
         * $redis->set('x', '42');
         * $exValue = $redis->getSet('x', 'lol');   // return '42', replaces x by 'lol'
         * $newValue = $redis->get('x')'            // return 'lol'
         * </pre>
         */
        public function getSet($key, $value)
        {
        }

        /**
         * Returns a random key.
         *
         * @return string an existing key in redis
         *
         * @see    https://redis.io/commands/randomkey
         *
         * @example
         * <pre>
         * $key = $redis->randomKey();
         * $surprise = $redis->get($key);  // who knows what's in there.
         * </pre>
         */
        public function randomKey()
        {
        }

        /**
         * Switches to a given database.
         *
         * @param int $dbIndex
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/select
         *
         * @example
         * <pre>
         * $redis->select(0);       // switch to DB 0
         * $redis->set('x', '42');  // write 42 to x
         * $redis->move('x', 1);    // move to DB 1
         * $redis->select(1);       // switch to DB 1
         * $redis->get('x');        // will return 42
         * </pre>
         */
        public function select($dbIndex)
        {
        }

        /**
         * Moves a key to a different database.
         *
         * @param string $key
         * @param int    $dbIndex
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/move
         *
         * @example
         * <pre>
         * $redis->select(0);       // switch to DB 0
         * $redis->set('x', '42');  // write 42 to x
         * $redis->move('x', 1);    // move to DB 1
         * $redis->select(1);       // switch to DB 1
         * $redis->get('x');        // will return 42
         * </pre>
         */
        public function move($key, $dbIndex)
        {
        }

        /**
         * Renames a key.
         *
         * @param string $srcKey
         * @param string $dstKey
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/rename
         *
         * @example
         * <pre>
         * $redis->set('x', '42');
         * $redis->rename('x', 'y');
         * $redis->get('y');   // → 42
         * $redis->get('x');   // → `FALSE`
         * </pre>
         */
        public function rename($srcKey, $dstKey)
        {
        }

        /**
         * @see rename()
         * @see    https://redis.io/commands/rename
         * @deprecated use Redis::rename()
         *
         * @param string $srcKey
         * @param string $dstKey
         */
        public function renameKey($srcKey, $dstKey)
        {
        }

        /**
         * Renames a key.
         *
         * Same as rename, but will not replace a key if the destination already exists.
         * This is the same behaviour as setNx.
         *
         * @param string $srcKey
         * @param string $dstKey
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/renamenx
         *
         * @example
         * <pre>
         * $redis->set('x', '42');
         * $redis->rename('x', 'y');
         * $redis->get('y');   // → 42
         * $redis->get('x');   // → `FALSE`
         * </pre>
         */
        public function renameNx($srcKey, $dstKey)
        {
        }

        /**
         * Sets an expiration date (a timeout) on an item.
         *
         * @param string $key The key that will disappear
         * @param int    $ttl The key's remaining Time To Live, in seconds
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/expire
         *
         * @example
         * <pre>
         * $redis->set('x', '42');
         * $redis->expire('x', 3);  // x will disappear in 3 seconds.
         * sleep(5);                    // wait 5 seconds
         * $redis->get('x');            // will return `FALSE`, as 'x' has expired.
         * </pre>
         */
        public function expire($key, $ttl)
        {
        }

        /**
         * Sets an expiration date (a timeout in milliseconds) on an item.
         *
         * @param string $key the key that will disappear
         * @param int    $ttl The key's remaining Time To Live, in milliseconds
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/pexpire
         *
         * @example
         * <pre>
         * $redis->set('x', '42');
         * $redis->pExpire('x', 11500); // x will disappear in 11500 milliseconds.
         * $redis->ttl('x');            // 12
         * $redis->pttl('x');           // 11500
         * </pre>
         */
        public function pExpire($key, $ttl)
        {
        }

        /**
         * @see expire()
         * @see    https://redis.io/commands/expire
         * @deprecated use Redis::expire()
         *
         * @param string $key
         * @param int    $ttl
         *
         * @return bool
         */
        public function setTimeout($key, $ttl)
        {
        }

        /**
         * Sets an expiration date (a timestamp) on an item.
         *
         * @param string $key       the key that will disappear
         * @param int    $timestamp Unix timestamp. The key's date of death, in seconds from Epoch time.
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/expireat
         *
         * @example
         * <pre>
         * $redis->set('x', '42');
         * $now = time(NULL);               // current timestamp
         * $redis->expireAt('x', $now + 3); // x will disappear in 3 seconds.
         * sleep(5);                        // wait 5 seconds
         * $redis->get('x');                // will return `FALSE`, as 'x' has expired.
         * </pre>
         */
        public function expireAt($key, $timestamp)
        {
        }

        /**
         * Sets an expiration date (a timestamp) on an item. Requires a timestamp in milliseconds.
         *
         * @param string $key       The key that will disappear
         * @param int    $timestamp Unix timestamp. The key's date of death, in seconds from Epoch time
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/pexpireat
         *
         * @example
         * <pre>
         * $redis->set('x', '42');
         * $redis->pExpireAt('x', 1555555555005);
         * echo $redis->ttl('x');                       // 218270121
         * echo $redis->pttl('x');                      // 218270120575
         * </pre>
         */
        public function pExpireAt($key, $timestamp)
        {
        }

        /**
         * Returns the keys that match a certain pattern.
         *
         * @param string $pattern pattern, using '*' as a wildcard
         *
         * @return array string[] The keys that match a certain pattern
         *
         * @see    https://redis.io/commands/keys
         *
         * @example
         * <pre>
         * $allKeys = $redis->keys('*');   // all keys will match this.
         * $keyWithUserPrefix = $redis->keys('user*');
         * </pre>
         */
        public function keys($pattern)
        {
        }

        /**
         * @see keys()
         * @deprecated use Redis::keys()
         *
         * @param string $pattern
         *
         * @see    https://redis.io/commands/keys
         */
        public function getKeys($pattern)
        {
        }

        /**
         * Returns the current database's size.
         *
         * @return int DB size, in number of keys
         *
         * @see    https://redis.io/commands/dbsize
         *
         * @example
         * <pre>
         * $count = $redis->dbSize();
         * echo "Redis has $count keys\n";
         * </pre>
         */
        public function dbSize()
        {
        }

        /**
         * Authenticate the connection using a password or a username and password..
         * Warning: The password is sent in plain-text over the network.
         *
         * @param mixed $password
         *
         * @return bool TRUE if the connection is authenticated, FALSE otherwise
         *
         * @see    https://redis.io/commands/auth
         *
         * @example
         * <pre>
         * $redis->auth('bar'); // Authenticate with the password 'bar'
         * $redis->auth(['user' => 'foo', 'pass' => 'bar]); // Authenticate with the username 'foo', and password 'bar'
         * </pre>
         */
        public function auth($password)
        {
        }

        /**
         * Starts the background rewrite of AOF (Append-Only File).
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/bgrewriteaof
         *
         * @example $redis->bgrewriteaof();
         */
        public function bgrewriteaof()
        {
        }

        /**
         * Changes the slave status
         * Either host and port, or no parameter to stop being a slave.
         *
         * @param string $host [optional]
         * @param int    $port [optional]
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/slaveof
         *
         * @example
         * <pre>
         * $redis->slaveof('10.0.1.7', 6379);
         * // ...
         * $redis->slaveof();
         * </pre>
         */
        public function slaveof($host = '127.0.0.1', $port = 6379)
        {
        }

        /**
         * Access the Redis slowLog.
         *
         * @param string   $operation This can be either GET, LEN, or RESET
         * @param int|null $length    if executing a SLOWLOG GET command, you can pass an optional length
         *
         * @return mixed The return value of SLOWLOG will depend on which operation was performed.
         *               - SLOWLOG GET: Array of slowLog entries, as provided by Redis
         *               - SLOGLOG LEN: Integer, the length of the slowLog
         *               - SLOWLOG RESET: Boolean, depending on success
         *
         * @example
         * <pre>
         * // Get ten slowLog entries
         * $redis->slowLog('get', 10);
         * // Get the default number of slowLog entries
         *
         * $redis->slowLog('get');
         * // Reset our slowLog
         * $redis->slowLog('reset');
         *
         * // Retrieve slowLog length
         * $redis->slowLog('len');
         * </pre>
         *
         * @see https://redis.io/commands/slowlog
         */
        public function slowLog(string $operation, int $length = null)
        {
        }

        /**
         * Describes the object pointed to by a key.
         * The information to retrieve (string) and the key (string).
         * Info can be one of the following:
         * - "encoding"
         * - "refcount"
         * - "idletime".
         *
         * @param string $string
         * @param string $key
         *
         * @return bool|int|string for "encoding", int for "refcount" and "idletime", FALSE if the key doesn't exist
         *
         * @see    https://redis.io/commands/object
         *
         * @example
         * <pre>
         * $redis->lPush('l', 'Hello, world!');
         * $redis->object("encoding", "l"); // → ziplist
         * $redis->object("refcount", "l"); // → 1
         * $redis->object("idletime", "l"); // → 400 (in seconds, with a precision of 10 seconds).
         * </pre>
         */
        public function object($string = '', $key = '')
        {
        }

        /**
         * Performs a synchronous save.
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *              If a save is already running, this command will fail and return FALSE
         *
         * @see    https://redis.io/commands/save
         *
         * @example $redis->save();
         */
        public function save()
        {
        }

        /**
         * Performs a background save.
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *              If a save is already running, this command will fail and return FALSE
         *
         * @see    https://redis.io/commands/bgsave
         *
         * @example $redis->bgSave();
         */
        public function bgsave()
        {
        }

        /**
         * Returns the timestamp of the last disk save.
         *
         * @return int timestamp
         *
         * @see    https://redis.io/commands/lastsave
         *
         * @example $redis->lastSave();
         */
        public function lastSave()
        {
        }

        /**
         * Blocks the current client until all the previous write commands are successfully transferred and
         * acknowledged by at least the specified number of slaves.
         *
         * @param int $numSlaves number of slaves that need to acknowledge previous write commands
         * @param int $timeout   timeout in milliseconds
         *
         * @return int The command returns the number of slaves reached by all the writes performed in the
         *             context of the current connection
         *
         * @see    https://redis.io/commands/wait
         *
         * @example $redis->wait(2, 1000);
         */
        public function wait($numSlaves, $timeout)
        {
        }

        /**
         * Returns the type of data pointed by a given key.
         *
         * @param string $key
         *
         * @return int
         *             Depending on the type of the data pointed by the key,
         *             this method will return the following value:
         *             - string: Redis::REDIS_STRING
         *             - set:   Redis::REDIS_SET
         *             - list:  Redis::REDIS_LIST
         *             - zset:  Redis::REDIS_ZSET
         *             - hash:  Redis::REDIS_HASH
         *             - other: Redis::REDIS_NOT_FOUND
         *
         * @see    https://redis.io/commands/type
         *
         * @example $redis->type('key');
         */
        public function type($key)
        {
        }

        /**
         * Append specified string to the string stored in specified key.
         *
         * @param string       $key
         * @param mixed|string $value
         *
         * @return int Size of the value after the append
         *
         * @see    https://redis.io/commands/append
         *
         * @example
         * <pre>
         * $redis->set('key', 'value1');
         * $redis->append('key', 'value2'); // 12
         * $redis->get('key');              // 'value1value2'
         * </pre>
         */
        public function append($key, $value)
        {
        }

        /**
         * Return a substring of a larger string.
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         *
         * @return string the substring
         *
         * @see    https://redis.io/commands/getrange
         *
         * @example
         * <pre>
         * $redis->set('key', 'string value');
         * $redis->getRange('key', 0, 5);   // 'string'
         * $redis->getRange('key', -5, -1); // 'value'
         * </pre>
         */
        public function getRange($key, $start, $end)
        {
        }

        /**
         * Return a substring of a larger string.
         *
         * @deprecated
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         */
        public function substr($key, $start, $end)
        {
        }

        /**
         * Changes a substring of a larger string.
         *
         * @param string $key
         * @param int    $offset
         * @param string $value
         *
         * @return int the length of the string after it was modified
         *
         * @see    https://redis.io/commands/setrange
         *
         * @example
         * <pre>
         * $redis->set('key', 'Hello world');
         * $redis->setRange('key', 6, "redis"); // returns 11
         * $redis->get('key');                  // "Hello redis"
         * </pre>
         */
        public function setRange($key, $offset, $value)
        {
        }

        /**
         * Get the length of a string value.
         *
         * @param string $key
         *
         * @return int
         *
         * @see    https://redis.io/commands/strlen
         *
         * @example
         * <pre>
         * $redis->set('key', 'value');
         * $redis->strlen('key'); // 5
         * </pre>
         */
        public function strlen($key)
        {
        }

        /**
         * Return the position of the first bit set to 1 or 0 in a string. The position is returned, thinking of the
         * string as an array of bits from left to right, where the first byte's most significant bit is at position 0,
         * the second byte's most significant bit is at position 8, and so forth.
         *
         * @param string $key
         * @param int    $bit
         * @param int    $start
         * @param int    $end
         *
         * @return int The command returns the position of the first bit set to 1 or 0 according to the request.
         *             If we look for set bits (the bit argument is 1) and the string is empty or composed of just
         *             zero bytes, -1 is returned. If we look for clear bits (the bit argument is 0) and the string
         *             only contains bit set to 1, the function returns the first bit not part of the string on the
         *             right. So if the string is three bytes set to the value 0xff the command BITPOS key 0 will
         *             return 24, since up to bit 23 all the bits are 1. Basically, the function considers the right
         *             of the string as padded with zeros if you look for clear bits and specify no range or the
         *             start argument only. However, this behavior changes if you are looking for clear bits and
         *             specify a range with both start and end. If no clear bit is found in the specified range, the
         *             function returns -1 as the user specified a clear range and there are no 0 bits in that range.
         *
         * @see    https://redis.io/commands/bitpos
         *
         * @example
         * <pre>
         * $redis->set('key', '\xff\xff');
         * $redis->bitpos('key', 1); // int(0)
         * $redis->bitpos('key', 1, 1); // int(8)
         * $redis->bitpos('key', 1, 3); // int(-1)
         * $redis->bitpos('key', 0); // int(16)
         * $redis->bitpos('key', 0, 1); // int(16)
         * $redis->bitpos('key', 0, 1, 5); // int(-1)
         * </pre>
         */
        public function bitpos($key, $bit, $start = 0, $end = null)
        {
        }

        /**
         * Return a single bit out of a larger string.
         *
         * @param string $key
         * @param int    $offset
         *
         * @return int the bit value (0 or 1)
         *
         * @see    https://redis.io/commands/getbit
         *
         * @example
         * <pre>
         * $redis->set('key', "\x7f");  // this is 0111 1111
         * $redis->getBit('key', 0);    // 0
         * $redis->getBit('key', 1);    // 1
         * </pre>
         */
        public function getBit($key, $offset)
        {
        }

        /**
         * Changes a single bit of a string.
         *
         * @param string   $key
         * @param int      $offset
         * @param bool|int $value  bool or int (1 or 0)
         *
         * @return int 0 or 1, the value of the bit before it was set
         *
         * @see    https://redis.io/commands/setbit
         *
         * @example
         * <pre>
         * $redis->set('key', "*");     // ord("*") = 42 = 0x2f = "0010 1010"
         * $redis->setBit('key', 5, 1); // returns 0
         * $redis->setBit('key', 7, 1); // returns 0
         * $redis->get('key');          // chr(0x2f) = "/" = b("0010 1111")
         * </pre>
         */
        public function setBit($key, $offset, $value)
        {
        }

        /**
         * Count bits in a string.
         *
         * @param string $key
         *
         * @return int The number of bits set to 1 in the value behind the input key
         *
         * @see    https://redis.io/commands/bitcount
         *
         * @example
         * <pre>
         * $redis->set('bit', '345'); // // 11 0011  0011 0100  0011 0101
         * var_dump( $redis->bitCount('bit', 0, 0) ); // int(4)
         * var_dump( $redis->bitCount('bit', 1, 1) ); // int(3)
         * var_dump( $redis->bitCount('bit', 2, 2) ); // int(4)
         * var_dump( $redis->bitCount('bit', 0, 2) ); // int(11)
         * </pre>
         */
        public function bitCount($key)
        {
        }

        /**
         * Bitwise operation on multiple keys.
         *
         * @param string $operation    either "AND", "OR", "NOT", "XOR"
         * @param string $retKey       return key
         * @param string $key1         first key
         * @param string ...$otherKeys variadic list of keys
         *
         * @return int The size of the string stored in the destination key
         *
         * @see    https://redis.io/commands/bitop
         *
         * @example
         * <pre>
         * $redis->set('bit1', '1'); // 11 0001
         * $redis->set('bit2', '2'); // 11 0010
         *
         * $redis->bitOp('AND', 'bit', 'bit1', 'bit2'); // bit = 110000
         * $redis->bitOp('OR',  'bit', 'bit1', 'bit2'); // bit = 110011
         * $redis->bitOp('NOT', 'bit', 'bit1', 'bit2'); // bit = 110011
         * $redis->bitOp('XOR', 'bit', 'bit1', 'bit2'); // bit = 11
         * </pre>
         */
        public function bitOp($operation, $retKey, $key1, ...$otherKeys)
        {
        }

        /**
         * Removes all entries from the current database.
         *
         * @return bool Always TRUE
         *
         * @see    https://redis.io/commands/flushdb
         *
         * @example $redis->flushDB();
         */
        public function flushDB()
        {
        }

        /**
         * Removes all entries from all databases.
         *
         * @return bool Always TRUE
         *
         * @see    https://redis.io/commands/flushall
         *
         * @example $redis->flushAll();
         */
        public function flushAll()
        {
        }

        /**
         * Sort.
         *
         * @param string $key
         * @param array  $option array(key => value, ...) - optional, with the following keys and values:
         *                       - 'by' => 'some_pattern_*',
         *                       - 'limit' => array(0, 1),
         *                       - 'get' => 'some_other_pattern_*' or an array of patterns,
         *                       - 'sort' => 'asc' or 'desc',
         *                       - 'alpha' => TRUE,
         *                       - 'store' => 'external-key'
         *
         * @return array
         *               An array of values, or a number corresponding to the number of elements stored if that was used
         *
         * @see    https://redis.io/commands/sort
         *
         * @example
         * <pre>
         * $redis->del('s');
         * $redis->sadd('s', 5);
         * $redis->sadd('s', 4);
         * $redis->sadd('s', 2);
         * $redis->sadd('s', 1);
         * $redis->sadd('s', 3);
         *
         * var_dump($redis->sort('s')); // 1,2,3,4,5
         * var_dump($redis->sort('s', array('sort' => 'desc'))); // 5,4,3,2,1
         * var_dump($redis->sort('s', array('sort' => 'desc', 'store' => 'out'))); // (int)5
         * </pre>
         */
        public function sort($key, $option = null)
        {
        }

        /**
         * Returns an associative array of strings and integers.
         *
         * @param string $option Optional. The option to provide redis.
         *                       SERVER | CLIENTS | MEMORY | PERSISTENCE | STATS | REPLICATION | CPU | CLASTER | KEYSPACE | COMANDSTATS
         *
         * Returns an associative array of strings and integers, with the following keys:
         * - redis_version
         * - redis_git_sha1
         * - redis_git_dirty
         * - arch_bits
         * - multiplexing_api
         * - process_id
         * - uptime_in_seconds
         * - uptime_in_days
         * - lru_clock
         * - used_cpu_sys
         * - used_cpu_user
         * - used_cpu_sys_children
         * - used_cpu_user_children
         * - connected_clients
         * - connected_slaves
         * - client_longest_output_list
         * - client_biggest_input_buf
         * - blocked_clients
         * - used_memory
         * - used_memory_human
         * - used_memory_peak
         * - used_memory_peak_human
         * - mem_fragmentation_ratio
         * - mem_allocator
         * - loading
         * - aof_enabled
         * - changes_since_last_save
         * - bgsave_in_progress
         * - last_save_time
         * - total_connections_received
         * - total_commands_processed
         * - expired_keys
         * - evicted_keys
         * - keyspace_hits
         * - keyspace_misses
         * - hash_max_zipmap_entries
         * - hash_max_zipmap_value
         * - pubsub_channels
         * - pubsub_patterns
         * - latest_fork_usec
         * - vm_enabled
         * - role
         *
         * @return string
         *
         * @see    https://redis.io/commands/info
         *
         * @example
         * <pre>
         * $redis->info();
         *
         * or
         *
         * $redis->info("COMMANDSTATS"); //Information on the commands that have been run (>=2.6 only)
         * $redis->info("CPU"); // just CPU information from Redis INFO
         * </pre>
         */
        public function info($option = null)
        {
        }

        /**
         * Resets the statistics reported by Redis using the INFO command (`info()` function).
         * These are the counters that are reset:
         *      - Keyspace hits
         *      - Keyspace misses
         *      - Number of commands processed
         *      - Number of connections received
         *      - Number of expired keys.
         *
         * @return bool `TRUE` in case of success, `FALSE` in case of failure
         *
         * @example $redis->resetStat();
         *
         * @see https://redis.io/commands/config-resetstat
         */
        public function resetStat()
        {
        }

        /**
         * Returns the time to live left for a given key, in seconds. If the key doesn't exist, FALSE is returned.
         *
         * @param string $key
         *
         * @return bool|int the time left to live in seconds
         *
         * @see    https://redis.io/commands/ttl
         *
         * @example
         * <pre>
         * $redis->setex('key', 123, 'test');
         * $redis->ttl('key'); // int(123)
         * </pre>
         */
        public function ttl($key)
        {
        }

        /**
         * Returns a time to live left for a given key, in milliseconds.
         *
         * If the key doesn't exist, FALSE is returned.
         *
         * @param string $key
         *
         * @return bool|int the time left to live in milliseconds
         *
         * @see    https://redis.io/commands/pttl
         *
         * @example
         * <pre>
         * $redis->setex('key', 123, 'test');
         * $redis->pttl('key'); // int(122999)
         * </pre>
         */
        public function pttl($key)
        {
        }

        /**
         * Remove the expiration timer from a key.
         *
         * @param string $key
         *
         * @return bool TRUE if a timeout was removed, FALSE if the key didn’t exist or didn’t have an expiration timer
         *
         * @see    https://redis.io/commands/persist
         *
         * @example $redis->persist('key');
         */
        public function persist($key)
        {
        }

        /**
         * Sets multiple key-value pairs in one atomic command.
         * MSETNX only returns TRUE if all the keys were set (see SETNX).
         *
         * @param array $array Pairs: array(key => value, ...)
         *
         * @return bool TRUE in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/mset
         *
         * @example
         * <pre>
         * $redis->mset(array('key0' => 'value0', 'key1' => 'value1'));
         * var_dump($redis->get('key0'));
         * var_dump($redis->get('key1'));
         * // Output:
         * // string(6) "value0"
         * // string(6) "value1"
         * </pre>
         */
        public function mset(array $array)
        {
        }

        /**
         * Get the values of all the specified keys.
         * If one or more keys dont exist, the array will contain FALSE at the position of the key.
         *
         * @param array $keys Array containing the list of the keys
         *
         * @return array Array containing the values related to keys in argument
         *
         * @deprecated use Redis::mGet()
         *
         * @example
         * <pre>
         * $redis->set('key1', 'value1');
         * $redis->set('key2', 'value2');
         * $redis->set('key3', 'value3');
         * $redis->getMultiple(array('key1', 'key2', 'key3')); // array('value1', 'value2', 'value3');
         * $redis->getMultiple(array('key0', 'key1', 'key5')); // array(`FALSE`, 'value2', `FALSE`);
         * </pre>
         */
        public function getMultiple(array $keys)
        {
        }

        /**
         * Returns the values of all specified keys.
         *
         * For every key that does not hold a string value or does not exist,
         * the special value false is returned. Because of this, the operation never fails.
         *
         * @return array
         *
         * @see https://redis.io/commands/mget
         *
         * @example
         * <pre>
         * $redis->del('x', 'y', 'z', 'h');  // remove x y z
         * $redis->mset(array('x' => 'a', 'y' => 'b', 'z' => 'c'));
         * $redis->hset('h', 'field', 'value');
         * var_dump($redis->mget(array('x', 'y', 'z', 'h')));
         * // Output:
         * // array(3) {
         * //   [0]=> string(1) "a"
         * //   [1]=> string(1) "b"
         * //   [2]=> string(1) "c"
         * //   [3]=> bool(false)
         * // }
         * </pre>
         */
        public function mget(array $array)
        {
        }

        /**
         * @see mset()
         *
         * @return int 1 (if the keys were set) or 0 (no key was set)
         *
         * @see    https://redis.io/commands/msetnx
         */
        public function msetnx(array $array)
        {
        }

        /**
         * Pops a value from the tail of a list, and pushes it to the front of another list.
         * Also return this value.
         *
         * @since   redis >= 1.1
         *
         * @param string $srcKey
         * @param string $dstKey
         *
         * @return bool|mixed|string the element that was moved in case of success, FALSE in case of failure
         *
         * @see    https://redis.io/commands/rpoplpush
         *
         * @example
         * <pre>
         * $redis->del('x', 'y');
         *
         * $redis->lPush('x', 'abc');
         * $redis->lPush('x', 'def');
         * $redis->lPush('y', '123');
         * $redis->lPush('y', '456');
         *
         * // move the last of x to the front of y.
         * var_dump($redis->rpoplpush('x', 'y'));
         * var_dump($redis->lRange('x', 0, -1));
         * var_dump($redis->lRange('y', 0, -1));
         *
         * //Output:
         * //
         * //string(3) "abc"
         * //array(1) {
         * //  [0]=>
         * //  string(3) "def"
         * //}
         * //array(3) {
         * //  [0]=>
         * //  string(3) "abc"
         * //  [1]=>
         * //  string(3) "456"
         * //  [2]=>
         * //  string(3) "123"
         * //}
         * </pre>
         */
        public function rpoplpush($srcKey, $dstKey)
        {
        }

        /**
         * A blocking version of rpoplpush, with an integral timeout in the third parameter.
         *
         * @param string $srcKey
         * @param string $dstKey
         * @param int    $timeout
         *
         * @return bool|mixed|string The element that was moved in case of success, FALSE in case of timeout
         *
         * @see    https://redis.io/commands/brpoplpush
         */
        public function brpoplpush($srcKey, $dstKey, $timeout)
        {
        }

        /**
         * Adds the specified member with a given score to the sorted set stored at key.
         *
         * @param string       $key     Required key
         * @param array        $options Options if needed
         * @param float        $score1  Required score
         * @param mixed|string $value1  Required value
         * @param float        $score2  Optional score
         * @param mixed|string $value2  Optional value
         * @param float        $scoreN  Optional score
         * @param mixed|string $valueN  Optional value
         *
         * @return int Number of values added
         *
         * @see    https://redis.io/commands/zadd
         *
         * @example
         * <pre>
         * <pre>
         * $redis->zAdd('z', 1, 'v1', 2, 'v2', 3, 'v3', 4, 'v4' );  // int(4)
         * $redis->zRem('z', 'v2', 'v3');                           // int(2)
         * $redis->zAdd('z', ['NX'], 5, 'v5');                      // int(1)
         * $redis->zAdd('z', ['NX'], 6, 'v5');                      // int(0)
         * $redis->zAdd('z', 7, 'v6');                              // int(1)
         * $redis->zAdd('z', 8, 'v6');                              // int(0)
         *
         * var_dump( $redis->zRange('z', 0, -1) );
         * // Output:
         * // array(4) {
         * //   [0]=> string(2) "v1"
         * //   [1]=> string(2) "v4"
         * //   [2]=> string(2) "v5"
         * //   [3]=> string(2) "v8"
         * // }
         *
         * var_dump( $redis->zRange('z', 0, -1, true) );
         * // Output:
         * // array(4) {
         * //   ["v1"]=> float(1)
         * //   ["v4"]=> float(4)
         * //   ["v5"]=> float(5)
         * //   ["v6"]=> float(8)
         * </pre>
         * </pre>
         */
        public function zAdd($key, $options, $score1, $value1, $score2 = null, $value2 = null, $scoreN = null, $valueN = null)
        {
        }

        /**
         * Returns a range of elements from the ordered set stored at the specified key,
         * with values in the range [start, end]. start and stop are interpreted as zero-based indices:
         * 0 the first element,
         * 1 the second ...
         * -1 the last element,
         * -2 the penultimate ...
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         * @param bool   $withscores
         *
         * @return array array containing the values in specified range
         *
         * @see    https://redis.io/commands/zrange
         *
         * @example
         * <pre>
         * $redis->zAdd('key1', 0, 'val0');
         * $redis->zAdd('key1', 2, 'val2');
         * $redis->zAdd('key1', 10, 'val10');
         * $redis->zRange('key1', 0, -1); // array('val0', 'val2', 'val10')
         * // with scores
         * $redis->zRange('key1', 0, -1, true); // array('val0' => 0, 'val2' => 2, 'val10' => 10)
         * </pre>
         */
        public function zRange($key, $start, $end, $withscores = null)
        {
        }

        /**
         * Deletes a specified member from the ordered set.
         *
         * @param string       $key
         * @param mixed|string $member1
         * @param mixed|string ...$otherMembers
         *
         * @return int Number of deleted values
         *
         * @see    https://redis.io/commands/zrem
         *
         * @example
         * <pre>
         * $redis->zAdd('z', 1, 'v1', 2, 'v2', 3, 'v3', 4, 'v4' );  // int(2)
         * $redis->zRem('z', 'v2', 'v3');                           // int(2)
         * var_dump( $redis->zRange('z', 0, -1) );
         * //// Output:
         * // array(2) {
         * //   [0]=> string(2) "v1"
         * //   [1]=> string(2) "v4"
         * // }
         * </pre>
         */
        public function zRem($key, $member1, ...$otherMembers)
        {
        }

        /**
         * @see zRem()
         * @see https://redis.io/commands/zrem
         * @deprecated use Redis::zRem()
         *
         * @param string       $key
         * @param mixed|string $member1
         * @param mixed|string ...$otherMembers
         *
         * @return int Number of deleted values
         */
        public function zDelete($key, $member1, ...$otherMembers)
        {
        }

        /**
         * Returns the elements of the sorted set stored at the specified key in the range [start, end]
         * in reverse order. start and stop are interpretated as zero-based indices:
         * 0 the first element,
         * 1 the second ...
         * -1 the last element,
         * -2 the penultimate ...
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         * @param bool   $withscore
         *
         * @return array array containing the values in specified range
         *
         * @see    https://redis.io/commands/zrevrange
         *
         * @example
         * <pre>
         * $redis->zAdd('key', 0, 'val0');
         * $redis->zAdd('key', 2, 'val2');
         * $redis->zAdd('key', 10, 'val10');
         * $redis->zRevRange('key', 0, -1); // array('val10', 'val2', 'val0')
         *
         * // with scores
         * $redis->zRevRange('key', 0, -1, true); // array('val10' => 10, 'val2' => 2, 'val0' => 0)
         * </pre>
         */
        public function zRevRange($key, $start, $end, $withscore = null)
        {
        }

        /**
         * Returns the elements of the sorted set stored at the specified key which have scores in the
         * range [start,end]. Adding a parenthesis before start or end excludes it from the range.
         * +inf and -inf are also valid limits.
         *
         * zRevRangeByScore returns the same items in reverse order, when the start and end parameters are swapped.
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         * @param array  $options Two options are available:
         *                        - withscores => TRUE,
         *                        - and limit => array($offset, $count)
         *
         * @return array array containing the values in specified range
         *
         * @see    https://redis.io/commands/zrangebyscore
         *
         * @example
         * <pre>
         * $redis->zAdd('key', 0, 'val0');
         * $redis->zAdd('key', 2, 'val2');
         * $redis->zAdd('key', 10, 'val10');
         * $redis->zRangeByScore('key', 0, 3);                                          // array('val0', 'val2')
         * $redis->zRangeByScore('key', 0, 3, array('withscores' => TRUE);              // array('val0' => 0, 'val2' => 2)
         * $redis->zRangeByScore('key', 0, 3, array('limit' => array(1, 1));                        // array('val2')
         * $redis->zRangeByScore('key', 0, 3, array('withscores' => TRUE, 'limit' => array(1, 1));  // array('val2' => 2)
         * </pre>
         */
        public function zRangeByScore($key, $start, $end, array $options = [])
        {
        }

        /**
         * @see zRangeByScore()
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         *
         * @return array
         */
        public function zRevRangeByScore($key, $start, $end, array $options = [])
        {
        }

        /**
         * Returns a lexigraphical range of members in a sorted set, assuming the members have the same score. The
         * min and max values are required to start with '(' (exclusive), '[' (inclusive), or be exactly the values
         * '-' (negative inf) or '+' (positive inf).  The command must be called with either three *or* five
         * arguments or will return FALSE.
         *
         * @param string $key    the ZSET you wish to run against
         * @param int    $min    the minimum alphanumeric value you wish to get
         * @param int    $max    the maximum alphanumeric value you wish to get
         * @param int    $offset optional argument if you wish to start somewhere other than the first element
         * @param int    $limit  optional argument if you wish to limit the number of elements returned
         *
         * @return array|bool array containing the values in the specified range
         *
         * @see    https://redis.io/commands/zrangebylex
         *
         * @example
         * <pre>
         * foreach (array('a', 'b', 'c', 'd', 'e', 'f', 'g') as $char) {
         *     $redis->zAdd('key', $char);
         * }
         *
         * $redis->zRangeByLex('key', '-', '[c'); // array('a', 'b', 'c')
         * $redis->zRangeByLex('key', '-', '(c'); // array('a', 'b')
         * $redis->zRangeByLex('key', '-', '[c'); // array('b', 'c')
         * </pre>
         */
        public function zRangeByLex($key, $min, $max, $offset = null, $limit = null)
        {
        }

        /**
         * @see zRangeByLex()
         *
         * @param string $key
         * @param int    $min
         * @param int    $max
         * @param int    $offset
         * @param int    $limit
         *
         * @return array
         *
         * @see    https://redis.io/commands/zrevrangebylex
         */
        public function zRevRangeByLex($key, $min, $max, $offset = null, $limit = null)
        {
        }

        /**
         * Returns the number of elements of the sorted set stored at the specified key which have
         * scores in the range [start,end]. Adding a parenthesis before start or end excludes it
         * from the range. +inf and -inf are also valid limits.
         *
         * @param string $key
         * @param string $start
         * @param string $end
         *
         * @return int the size of a corresponding zRangeByScore
         *
         * @see    https://redis.io/commands/zcount
         *
         * @example
         * <pre>
         * $redis->zAdd('key', 0, 'val0');
         * $redis->zAdd('key', 2, 'val2');
         * $redis->zAdd('key', 10, 'val10');
         * $redis->zCount('key', 0, 3); // 2, corresponding to array('val0', 'val2')
         * </pre>
         */
        public function zCount($key, $start, $end)
        {
        }

        /**
         * Deletes the elements of the sorted set stored at the specified key which have scores in the range [start,end].
         *
         * @param string       $key
         * @param float|string $start double or "+inf" or "-inf" string
         * @param float|string $end   double or "+inf" or "-inf" string
         *
         * @return int The number of values deleted from the sorted set
         *
         * @see    https://redis.io/commands/zremrangebyscore
         *
         * @example
         * <pre>
         * $redis->zAdd('key', 0, 'val0');
         * $redis->zAdd('key', 2, 'val2');
         * $redis->zAdd('key', 10, 'val10');
         * $redis->zRemRangeByScore('key', 0, 3); // 2
         * </pre>
         */
        public function zRemRangeByScore($key, $start, $end)
        {
        }

        /**
         * @see zRemRangeByScore()
         * @deprecated use Redis::zRemRangeByScore()
         *
         * @param string $key
         * @param float  $start
         * @param float  $end
         */
        public function zDeleteRangeByScore($key, $start, $end)
        {
        }

        /**
         * Deletes the elements of the sorted set stored at the specified key which have rank in the range [start,end].
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         *
         * @return int The number of values deleted from the sorted set
         *
         * @see    https://redis.io/commands/zremrangebyrank
         *
         * @example
         * <pre>
         * $redis->zAdd('key', 1, 'one');
         * $redis->zAdd('key', 2, 'two');
         * $redis->zAdd('key', 3, 'three');
         * $redis->zRemRangeByRank('key', 0, 1); // 2
         * $redis->zRange('key', 0, -1, array('withscores' => TRUE)); // array('three' => 3)
         * </pre>
         */
        public function zRemRangeByRank($key, $start, $end)
        {
        }

        /**
         * @see zRemRangeByRank()
         * @see    https://redis.io/commands/zremrangebyscore
         * @deprecated use Redis::zRemRangeByRank()
         *
         * @param string $key
         * @param int    $start
         * @param int    $end
         */
        public function zDeleteRangeByRank($key, $start, $end)
        {
        }

        /**
         * Returns the cardinality of an ordered set.
         *
         * @param string $key
         *
         * @return int the set's cardinality
         *
         * @see    https://redis.io/commands/zsize
         *
         * @example
         * <pre>
         * $redis->zAdd('key', 0, 'val0');
         * $redis->zAdd('key', 2, 'val2');
         * $redis->zAdd('key', 10, 'val10');
         * $redis->zCard('key');            // 3
         * </pre>
         */
        public function zCard($key)
        {
        }

        /**
         * @see zCard()
         * @deprecated use Redis::zCard()
         *
         * @param string $key
         *
         * @return int
         */
        public function zSize($key)
        {
        }

        /**
         * Returns the score of a given member in the specified sorted set.
         *
         * @param string       $key
         * @param mixed|string $member
         *
         * @return bool|float false if member or key not exists
         *
         * @see    https://redis.io/commands/zscore
         *
         * @example
         * <pre>
         * $redis->zAdd('key', 2.5, 'val2');
         * $redis->zScore('key', 'val2'); // 2.5
         * </pre>
         */
        public function zScore($key, $member)
        {
        }

        /**
         * Returns the rank of a given member in the specified sorted set, starting at 0 for the item
         * with the smallest score. zRevRank starts at 0 for the item with the largest score.
         *
         * @param string       $key
         * @param mixed|string $member
         *
         * @return bool|int the item's score, or false if key or member is not exists
         *
         * @see    https://redis.io/commands/zrank
         *
         * @example
         * <pre>
         * $redis->del('z');
         * $redis->zAdd('key', 1, 'one');
         * $redis->zAdd('key', 2, 'two');
         * $redis->zRank('key', 'one');     // 0
         * $redis->zRank('key', 'two');     // 1
         * $redis->zRevRank('key', 'one');  // 1
         * $redis->zRevRank('key', 'two');  // 0
         * </pre>
         */
        public function zRank($key, $member)
        {
        }

        /**
         * @see zRank()
         *
         * @param string       $key
         * @param mixed|string $member
         *
         * @return bool|int the item's score, false - if key or member is not exists
         *
         * @see   https://redis.io/commands/zrevrank
         */
        public function zRevRank($key, $member)
        {
        }

        /**
         * Increments the score of a member from a sorted set by a given amount.
         *
         * @param string $key
         * @param float  $value  (double) value that will be added to the member's score
         * @param string $member
         *
         * @return float the new value
         *
         * @see    https://redis.io/commands/zincrby
         *
         * @example
         * <pre>
         * $redis->del('key');
         * $redis->zIncrBy('key', 2.5, 'member1');  // key or member1 didn't exist, so member1's score is to 0
         *                                          // before the increment and now has the value 2.5
         * $redis->zIncrBy('key', 1, 'member1');    // 3.5
         * </pre>
         */
        public function zIncrBy($key, $value, $member)
        {
        }

        /**
         * Creates an union of sorted sets given in second argument.
         * The result of the union will be stored in the sorted set defined by the first argument.
         * The third optionnel argument defines weights to apply to the sorted sets in input.
         * In this case, the weights will be multiplied by the score of each element in the sorted set
         * before applying the aggregation. The forth argument defines the AGGREGATE option which
         * specify how the results of the union are aggregated.
         *
         * @param string $output
         * @param array  $zSetKeys
         * @param array  $weights
         * @param string $aggregateFunction Either "SUM", "MIN", or "MAX": defines the behaviour to use on
         *                                  duplicate entries during the zUnionStore
         *
         * @return int The number of values in the new sorted set
         *
         * @see    https://redis.io/commands/zunionstore
         *
         * @example
         * <pre>
         * $redis->del('k1');
         * $redis->del('k2');
         * $redis->del('k3');
         * $redis->del('ko1');
         * $redis->del('ko2');
         * $redis->del('ko3');
         *
         * $redis->zAdd('k1', 0, 'val0');
         * $redis->zAdd('k1', 1, 'val1');
         *
         * $redis->zAdd('k2', 2, 'val2');
         * $redis->zAdd('k2', 3, 'val3');
         *
         * $redis->zUnionStore('ko1', array('k1', 'k2')); // 4, 'ko1' => array('val0', 'val1', 'val2', 'val3')
         *
         * // Weighted zUnionStore
         * $redis->zUnionStore('ko2', array('k1', 'k2'), array(1, 1)); // 4, 'ko2' => array('val0', 'val1', 'val2', 'val3')
         * $redis->zUnionStore('ko3', array('k1', 'k2'), array(5, 1)); // 4, 'ko3' => array('val0', 'val2', 'val3', 'val1')
         * </pre>
         */
        public function zUnionStore($output, $zSetKeys, array $weights = null, $aggregateFunction = 'SUM')
        {
        }

        /**
         * @see zUnionStore
         * @deprecated use Redis::zUnionStore()
         *
         * @param string $Output
         * @param array  $ZSetKeys
         * @param string $aggregateFunction
         */
        public function zUnion($Output, $ZSetKeys, array $Weights = null, $aggregateFunction = 'SUM')
        {
        }

        /**
         * Creates an intersection of sorted sets given in second argument.
         * The result of the union will be stored in the sorted set defined by the first argument.
         * The third optional argument defines weights to apply to the sorted sets in input.
         * In this case, the weights will be multiplied by the score of each element in the sorted set
         * before applying the aggregation. The forth argument defines the AGGREGATE option which
         * specify how the results of the union are aggregated.
         *
         * @param string $output
         * @param array  $zSetKeys
         * @param array  $weights
         * @param string $aggregateFunction either "SUM", "MIN", or "MAX":
         *                                  defines the behaviour to use on duplicate entries during the zInterStore
         *
         * @return int the number of values in the new sorted set
         *
         * @see    https://redis.io/commands/zinterstore
         *
         * @example
         * <pre>
         * $redis->del('k1');
         * $redis->del('k2');
         * $redis->del('k3');
         *
         * $redis->del('ko1');
         * $redis->del('ko2');
         * $redis->del('ko3');
         * $redis->del('ko4');
         *
         * $redis->zAdd('k1', 0, 'val0');
         * $redis->zAdd('k1', 1, 'val1');
         * $redis->zAdd('k1', 3, 'val3');
         *
         * $redis->zAdd('k2', 2, 'val1');
         * $redis->zAdd('k2', 3, 'val3');
         *
         * $redis->zInterStore('ko1', array('k1', 'k2'));               // 2, 'ko1' => array('val1', 'val3')
         * $redis->zInterStore('ko2', array('k1', 'k2'), array(1, 1));  // 2, 'ko2' => array('val1', 'val3')
         *
         * // Weighted zInterStore
         * $redis->zInterStore('ko3', array('k1', 'k2'), array(1, 5), 'min'); // 2, 'ko3' => array('val1', 'val3')
         * $redis->zInterStore('ko4', array('k1', 'k2'), array(1, 5), 'max'); // 2, 'ko4' => array('val3', 'val1')
         * </pre>
         */
        public function zInterStore($output, $zSetKeys, array $weights = null, $aggregateFunction = 'SUM')
        {
        }

        /**
         * @see zInterStore
         * @deprecated use Redis::zInterStore()
         *
         * @param $Output
         * @param $ZSetKeys
         * @param string $aggregateFunction
         */
        public function zInter($Output, $ZSetKeys, array $Weights = null, $aggregateFunction = 'SUM')
        {
        }

        /**
         * Scan a sorted set for members, with optional pattern and count.
         *
         * @param string $key      string, the set to scan
         * @param int    $iterator long (reference), initialized to NULL
         * @param string $pattern  string (optional), the pattern to match
         * @param int    $count    how many keys to return per iteration (Redis might return a different number)
         *
         * @return array|bool PHPRedis will return matching keys from Redis, or FALSE when iteration is complete
         *
         * @see    https://redis.io/commands/zscan
         *
         * @example
         * <pre>
         * $iterator = null;
         * while ($members = $redis-zscan('zset', $iterator)) {
         *     foreach ($members as $member => $score) {
         *         echo $member . ' => ' . $score . PHP_EOL;
         *     }
         * }
         * </pre>
         */
        public function zScan($key, &$iterator, $pattern = null, $count = 0)
        {
        }

        /**
         * Block until Redis can pop the highest or lowest scoring members from one or more ZSETs.
         * There are two commands (BZPOPMIN and BZPOPMAX for popping the lowest and highest scoring elements respectively.).
         *
         * @param array|string $key1
         * @param array|string $key2    ...
         * @param int          $timeout
         *
         * @return array either an array with the key member and score of the higest or lowest element or an empty array
         *               if the timeout was reached without an element to pop
         *
         * @since >= 5.0
         * @see https://redis.io/commands/bzpopmax
         *
         * @example
         * <pre>
         * // Wait up to 5 seconds to pop the *lowest* scoring member from sets `zs1` and `zs2`.
         * $redis->bzPopMin(['zs1', 'zs2'], 5);
         * $redis->bzPopMin('zs1', 'zs2', 5);
         *
         * // Wait up to 5 seconds to pop the *highest* scoring member from sets `zs1` and `zs2`
         * $redis->bzPopMax(['zs1', 'zs2'], 5);
         * $redis->bzPopMax('zs1', 'zs2', 5);
         * </pre>
         */
        public function bzPopMax($key1, $key2, $timeout)
        {
        }

        /**
         * @param array|string $key1
         * @param array|string $key2    ...
         * @param int          $timeout
         *
         * @return array either an array with the key member and score of the higest or lowest element or an empty array
         *               if the timeout was reached without an element to pop
         *
         * @see bzPopMax
         * @since >= 5.0
         * @see https://redis.io/commands/bzpopmin
         */
        public function bzPopMin($key1, $key2, $timeout)
        {
        }

        /**
         * Can pop the highest scoring members from one ZSET.
         *
         * @param string $key
         * @param int    $count
         *
         * @return array either an array with the key member and score of the highest element or an empty array
         *               if there is no element to pop
         *
         * @since >= 5.0
         * @see https://redis.io/commands/zpopmax
         *
         * @example
         * <pre>
         * // Pop the *lowest* scoring member from set `zs1`.
         * $redis->zPopMax('zs1');
         * // Pop the *lowest* 3 scoring member from set `zs1`.
         * $redis->zPopMax('zs1', 3);
         * </pre>
         */
        public function zPopMax($key, $count = 1)
        {
        }

        /**
         * Can pop the lowest scoring members from one ZSET.
         *
         * @param string $key
         * @param int    $count
         *
         * @return array either an array with the key member and score of the lowest element or an empty array
         *               if there is no element to pop
         *
         * @since >= 5.0
         * @see https://redis.io/commands/zpopmin
         *
         * @example
         * <pre>
         * // Pop the *lowest* scoring member from set `zs1`.
         * $redis->zPopMin('zs1');
         * // Pop the *lowest* 3 scoring member from set `zs1`.
         * $redis->zPopMin('zs1', 3);
         * </pre>
         */
        public function zPopMin($key, $count = 1)
        {
        }

        /**
         * Adds a value to the hash stored at key. If this value is already in the hash, FALSE is returned.
         *
         * @param string $key
         * @param string $hashKey
         * @param string $value
         *
         * @return bool|int
         *                  - 1 if value didn't exist and was added successfully,
         *                  - 0 if the value was already present and was replaced, FALSE if there was an error
         *
         * @see    https://redis.io/commands/hset
         *
         * @example
         * <pre>
         * $redis->del('h')
         * $redis->hSet('h', 'key1', 'hello');  // 1, 'key1' => 'hello' in the hash at "h"
         * $redis->hGet('h', 'key1');           // returns "hello"
         *
         * $redis->hSet('h', 'key1', 'plop');   // 0, value was replaced.
         * $redis->hGet('h', 'key1');           // returns "plop"
         * </pre>
         */
        public function hSet($key, $hashKey, $value)
        {
        }

        /**
         * Adds a value to the hash stored at key only if this field isn't already in the hash.
         *
         * @param string $key
         * @param string $hashKey
         * @param string $value
         *
         * @return bool TRUE if the field was set, FALSE if it was already present
         *
         * @see    https://redis.io/commands/hsetnx
         *
         * @example
         * <pre>
         * $redis->del('h')
         * $redis->hSetNx('h', 'key1', 'hello'); // TRUE, 'key1' => 'hello' in the hash at "h"
         * $redis->hSetNx('h', 'key1', 'world'); // FALSE, 'key1' => 'hello' in the hash at "h". No change since the field
         * wasn't replaced.
         * </pre>
         */
        public function hSetNx($key, $hashKey, $value)
        {
        }

        /**
         * Gets a value from the hash stored at key.
         * If the hash table doesn't exist, or the key doesn't exist, FALSE is returned.
         *
         * @param string $key
         * @param string $hashKey
         *
         * @return string The value, if the command executed successfully BOOL FALSE in case of failure
         *
         * @see    https://redis.io/commands/hget
         */
        public function hGet($key, $hashKey)
        {
        }

        /**
         * Returns the length of a hash, in number of items.
         *
         * @param string $key
         *
         * @return bool|int the number of items in a hash, FALSE if the key doesn't exist or isn't a hash
         *
         * @see    https://redis.io/commands/hlen
         *
         * @example
         * <pre>
         * $redis->del('h')
         * $redis->hSet('h', 'key1', 'hello');
         * $redis->hSet('h', 'key2', 'plop');
         * $redis->hLen('h'); // returns 2
         * </pre>
         */
        public function hLen($key)
        {
        }

        /**
         * Removes a values from the hash stored at key.
         * If the hash table doesn't exist, or the key doesn't exist, FALSE is returned.
         *
         * @param string $key
         * @param string $hashKey1
         * @param string ...$otherHashKeys
         *
         * @return bool|int Number of deleted fields
         *
         * @see    https://redis.io/commands/hdel
         *
         * @example
         * <pre>
         * $redis->hMSet('h',
         *               array(
         *                    'f1' => 'v1',
         *                    'f2' => 'v2',
         *                    'f3' => 'v3',
         *                    'f4' => 'v4',
         *               ));
         *
         * var_dump( $redis->hDel('h', 'f1') );        // int(1)
         * var_dump( $redis->hDel('h', 'f2', 'f3') );  // int(2)
         * s
         * var_dump( $redis->hGetAll('h') );
         * //// Output:
         * //  array(1) {
         * //    ["f4"]=> string(2) "v4"
         * //  }
         * </pre>
         */
        public function hDel($key, $hashKey1, ...$otherHashKeys)
        {
        }

        /**
         * Returns the keys in a hash, as an array of strings.
         *
         * @param string $key
         *
         * @return array An array of elements, the keys of the hash. This works like PHP's array_keys().
         *
         * @see    https://redis.io/commands/hkeys
         *
         * @example
         * <pre>
         * $redis->del('h');
         * $redis->hSet('h', 'a', 'x');
         * $redis->hSet('h', 'b', 'y');
         * $redis->hSet('h', 'c', 'z');
         * $redis->hSet('h', 'd', 't');
         * var_dump($redis->hKeys('h'));
         *
         * // Output:
         * // array(4) {
         * // [0]=>
         * // string(1) "a"
         * // [1]=>
         * // string(1) "b"
         * // [2]=>
         * // string(1) "c"
         * // [3]=>
         * // string(1) "d"
         * // }
         * // The order is random and corresponds to redis' own internal representation of the set structure.
         * </pre>
         */
        public function hKeys($key)
        {
        }

        /**
         * Returns the values in a hash, as an array of strings.
         *
         * @param string $key
         *
         * @return array An array of elements, the values of the hash. This works like PHP's array_values().
         *
         * @see    https://redis.io/commands/hvals
         *
         * @example
         * <pre>
         * $redis->del('h');
         * $redis->hSet('h', 'a', 'x');
         * $redis->hSet('h', 'b', 'y');
         * $redis->hSet('h', 'c', 'z');
         * $redis->hSet('h', 'd', 't');
         * var_dump($redis->hVals('h'));
         *
         * // Output
         * // array(4) {
         * //   [0]=>
         * //   string(1) "x"
         * //   [1]=>
         * //   string(1) "y"
         * //   [2]=>
         * //   string(1) "z"
         * //   [3]=>
         * //   string(1) "t"
         * // }
         * // The order is random and corresponds to redis' own internal representation of the set structure.
         * </pre>
         */
        public function hVals($key)
        {
        }

        /**
         * Returns the whole hash, as an array of strings indexed by strings.
         *
         * @param string $key
         *
         * @return array an array of elements, the contents of the hash
         *
         * @see    https://redis.io/commands/hgetall
         *
         * @example
         * <pre>
         * $redis->del('h');
         * $redis->hSet('h', 'a', 'x');
         * $redis->hSet('h', 'b', 'y');
         * $redis->hSet('h', 'c', 'z');
         * $redis->hSet('h', 'd', 't');
         * var_dump($redis->hGetAll('h'));
         *
         * // Output:
         * // array(4) {
         * //   ["a"]=>
         * //   string(1) "x"
         * //   ["b"]=>
         * //   string(1) "y"
         * //   ["c"]=>
         * //   string(1) "z"
         * //   ["d"]=>
         * //   string(1) "t"
         * // }
         * // The order is random and corresponds to redis' own internal representation of the set structure.
         * </pre>
         */
        public function hGetAll($key)
        {
        }

        /**
         * Verify if the specified member exists in a key.
         *
         * @param string $key
         * @param string $hashKey
         *
         * @return bool if the member exists in the hash table, return TRUE, otherwise return FALSE
         *
         * @see    https://redis.io/commands/hexists
         *
         * @example
         * <pre>
         * $redis->hSet('h', 'a', 'x');
         * $redis->hExists('h', 'a');               //  TRUE
         * $redis->hExists('h', 'NonExistingKey');  // FALSE
         * </pre>
         */
        public function hExists($key, $hashKey)
        {
        }

        /**
         * Increments the value of a member from a hash by a given amount.
         *
         * @param string $key
         * @param string $hashKey
         * @param int    $value   (integer) value that will be added to the member's value
         *
         * @return int the new value
         *
         * @see    https://redis.io/commands/hincrby
         *
         * @example
         * <pre>
         * $redis->del('h');
         * $redis->hIncrBy('h', 'x', 2); // returns 2: h[x] = 2 now.
         * $redis->hIncrBy('h', 'x', 1); // h[x] ← 2 + 1. Returns 3
         * </pre>
         */
        public function hIncrBy($key, $hashKey, $value)
        {
        }

        /**
         * Increment the float value of a hash field by the given amount.
         *
         * @param string $key
         * @param string $field
         * @param float  $increment
         *
         * @return float
         *
         * @see    https://redis.io/commands/hincrbyfloat
         *
         * @example
         * <pre>
         * $redis = new Redis();
         * $redis->connect('127.0.0.1');
         * $redis->hset('h', 'float', 3);
         * $redis->hset('h', 'int',   3);
         * var_dump( $redis->hIncrByFloat('h', 'float', 1.5) ); // float(4.5)
         *
         * var_dump( $redis->hGetAll('h') );
         *
         * // Output
         *  array(2) {
         *    ["float"]=>
         *    string(3) "4.5"
         *    ["int"]=>
         *    string(1) "3"
         *  }
         * </pre>
         */
        public function hIncrByFloat($key, $field, $increment)
        {
        }

        /**
         * Fills in a whole hash. Non-string values are converted to string, using the standard (string) cast.
         * NULL values are stored as empty strings.
         *
         * @param string $key
         * @param array  $hashKeys key → value array
         *
         * @return bool
         *
         * @see    https://redis.io/commands/hmset
         *
         * @example
         * <pre>
         * $redis->del('user:1');
         * $redis->hMSet('user:1', array('name' => 'Joe', 'salary' => 2000));
         * $redis->hIncrBy('user:1', 'salary', 100); // Joe earns 100 more now.
         * </pre>
         */
        public function hMSet($key, $hashKeys)
        {
        }

        /**
         * Retirieve the values associated to the specified fields in the hash.
         *
         * @param string $key
         * @param array  $hashKeys
         *
         * @return array array An array of elements, the values of the specified fields in the hash,
         *               with the hash keys as array keys
         *
         * @see    https://redis.io/commands/hmget
         *
         * @example
         * <pre>
         * $redis->del('h');
         * $redis->hSet('h', 'field1', 'value1');
         * $redis->hSet('h', 'field2', 'value2');
         * $redis->hmGet('h', array('field1', 'field2')); // returns array('field1' => 'value1', 'field2' => 'value2')
         * </pre>
         */
        public function hMGet($key, $hashKeys)
        {
        }

        /**
         * Scan a HASH value for members, with an optional pattern and count.
         *
         * @param string $key
         * @param int    $iterator
         * @param string $pattern  optional pattern to match against
         * @param int    $count    how many keys to return in a go (only a sugestion to Redis)
         *
         * @return array an array of members that match our pattern
         *
         * @see    https://redis.io/commands/hscan
         *
         * @example
         * <pre>
         * // $iterator = null;
         * // while($elements = $redis->hscan('hash', $iterator)) {
         * //     foreach($elements as $key => $value) {
         * //         echo $key . ' => ' . $value . PHP_EOL;
         * //     }
         * // }
         * </pre>
         */
        public function hScan($key, &$iterator, $pattern = null, $count = 0)
        {
        }

        /**
         * Get the string length of the value associated with field in the hash stored at key.
         *
         * @return int the string length of the value associated with field, or zero when field is not present in the hash
         *             or key does not exist at all
         *
         * @see https://redis.io/commands/hstrlen
         * @since >= 3.2
         */
        public function hStrLen(string $key, string $field)
        {
        }

        /**
         * Add one or more geospatial items to the specified key.
         * This function must be called with at least one longitude, latitude, member triplet.
         *
         * @param string $key
         * @param float  $longitude
         * @param float  $latitude
         * @param string $member
         *
         * @return int The number of elements added to the geospatial key
         *
         * @see https://redis.io/commands/geoadd
         * @since >=3.2
         *
         * @example
         * <pre>
         * $redis->del("myplaces");
         *
         * // Since the key will be new, $result will be 2
         * $result = $redis->geoAdd(
         *   "myplaces",
         *   -122.431, 37.773, "San Francisco",
         *   -157.858, 21.315, "Honolulu"
         * ); // 2
         * </pre>
         */
        public function geoadd($key, $longitude, $latitude, $member)
        {
        }

        /**
         * Retrieve Geohash strings for one or more elements of a geospatial index.
         *
         * @param string $key
         * @param string ...$member variadic list of members
         *
         * @return array One or more Redis Geohash encoded strings
         *
         * @see https://redis.io/commands/geohash
         * @since >=3.2
         *
         * @example
         * <pre>
         * $redis->geoAdd("hawaii", -157.858, 21.306, "Honolulu", -156.331, 20.798, "Maui");
         * $hashes = $redis->geoHash("hawaii", "Honolulu", "Maui");
         * var_dump($hashes);
         * // Output: array(2) {
         * //   [0]=>
         * //   string(11) "87z9pyek3y0"
         * //   [1]=>
         * //   string(11) "8e8y6d5jps0"
         * // }
         * </pre>
         */
        public function geohash($key, ...$member)
        {
        }

        /**
         * Return longitude, latitude positions for each requested member.
         *
         * @return array One or more longitude/latitude positions
         *
         * @see https://redis.io/commands/geopos
         * @since >=3.2
         *
         * @example
         * <pre>
         * $redis->geoAdd("hawaii", -157.858, 21.306, "Honolulu", -156.331, 20.798, "Maui");
         * $positions = $redis->geoPos("hawaii", "Honolulu", "Maui");
         * var_dump($positions);
         *
         * // Output:
         * array(2) {
         *  [0]=> array(2) {
         *      [0]=> string(22) "-157.85800248384475708"
         *      [1]=> string(19) "21.3060004581273077"
         *  }
         *  [1]=> array(2) {
         *      [0]=> string(22) "-156.33099943399429321"
         *      [1]=> string(20) "20.79799924753607598"
         *  }
         * }
         * </pre>
         */
        public function geopos(string $key, string $member)
        {
        }

        /**
         * Return the distance between two members in a geospatial set.
         *
         * If units are passed it must be one of the following values:
         * - 'm' => Meters
         * - 'km' => Kilometers
         * - 'mi' => Miles
         * - 'ft' => Feet
         *
         * @param string      $key
         * @param string      $member1
         * @param string      $member2
         * @param string|null $unit
         *
         * @return float The distance between the two passed members in the units requested (meters by default)
         *
         * @see https://redis.io/commands/geodist
         * @since >=3.2
         *
         * @example
         * <pre>
         * $redis->geoAdd("hawaii", -157.858, 21.306, "Honolulu", -156.331, 20.798, "Maui");
         *
         * $meters = $redis->geoDist("hawaii", "Honolulu", "Maui");
         * $kilometers = $redis->geoDist("hawaii", "Honolulu", "Maui", 'km');
         * $miles = $redis->geoDist("hawaii", "Honolulu", "Maui", 'mi');
         * $feet = $redis->geoDist("hawaii", "Honolulu", "Maui", 'ft');
         *
         * echo "Distance between Honolulu and Maui:\n";
         * echo "  meters    : $meters\n";
         * echo "  kilometers: $kilometers\n";
         * echo "  miles     : $miles\n";
         * echo "  feet      : $feet\n";
         *
         * // Bad unit
         * $inches = $redis->geoDist("hawaii", "Honolulu", "Maui", 'in');
         * echo "Invalid unit returned:\n";
         * var_dump($inches);
         *
         * // Output
         * Distance between Honolulu and Maui:
         * meters    : 168275.204
         * kilometers: 168.2752
         * miles     : 104.5616
         * feet      : 552084.0028
         * Invalid unit returned:
         * bool(false)
         * </pre>
         */
        public function geodist($key, $member1, $member2, $unit = null)
        {
        }

        /**
         * Return members of a set with geospatial information that are within the radius specified by the caller.
         *
         * @param $key
         * @param $longitude
         * @param $latitude
         * @param $radius
         * @param $unit
         * @param array|null $options
         *                            <pre>
         *                            |Key         |Value          |Description                                        |
         *                            |------------|---------------|---------------------------------------------------|
         *                            |COUNT       |integer > 0    |Limit how many results are returned                |
         *                            |            |WITHCOORD      |Return longitude and latitude of matching members  |
         *                            |            |WITHDIST       |Return the distance from the center                |
         *                            |            |WITHHASH       |Return the raw geohash-encoded score               |
         *                            |            |ASC            |Sort results in ascending order                    |
         *                            |            |DESC           |Sort results in descending order                   |
         *                            |STORE       |key            |Store results in key                               |
         *                            |STOREDIST   |key            |Store the results as distances in key              |
         *                            </pre>
         *                            Note: It doesn't make sense to pass both ASC and DESC options but if both are passed
         *                            the last one passed will be used.
         *                            Note: When using STORE[DIST] in Redis Cluster, the store key must has to the same slot as
         *                            the query key or you will get a CROSSLOT error.
         *
         * @return mixed When no STORE option is passed, this function returns an array of results.
         *               If it is passed this function returns the number of stored entries.
         *
         * @see https://redis.io/commands/georadius
         * @since >= 3.2
         *
         * @example
         * <pre>
         * // Add some cities
         * $redis->geoAdd("hawaii", -157.858, 21.306, "Honolulu", -156.331, 20.798, "Maui");
         *
         * echo "Within 300 miles of Honolulu:\n";
         * var_dump($redis->geoRadius("hawaii", -157.858, 21.306, 300, 'mi'));
         *
         * echo "\nWithin 300 miles of Honolulu with distances:\n";
         * $options = ['WITHDIST'];
         * var_dump($redis->geoRadius("hawaii", -157.858, 21.306, 300, 'mi', $options));
         *
         * echo "\nFirst result within 300 miles of Honolulu with distances:\n";
         * $options['count'] = 1;
         * var_dump($redis->geoRadius("hawaii", -157.858, 21.306, 300, 'mi', $options));
         *
         * echo "\nFirst result within 300 miles of Honolulu with distances in descending sort order:\n";
         * $options[] = 'DESC';
         * var_dump($redis->geoRadius("hawaii", -157.858, 21.306, 300, 'mi', $options));
         *
         * // Output
         * Within 300 miles of Honolulu:
         * array(2) {
         *  [0]=> string(8) "Honolulu"
         *  [1]=> string(4) "Maui"
         * }
         *
         * Within 300 miles of Honolulu with distances:
         * array(2) {
         *     [0]=>
         *   array(2) {
         *         [0]=>
         *     string(8) "Honolulu"
         *         [1]=>
         *     string(6) "0.0002"
         *   }
         *   [1]=>
         *   array(2) {
         *         [0]=>
         *     string(4) "Maui"
         *         [1]=>
         *     string(8) "104.5615"
         *   }
         * }
         *
         * First result within 300 miles of Honolulu with distances:
         * array(1) {
         *     [0]=>
         *   array(2) {
         *         [0]=>
         *     string(8) "Honolulu"
         *         [1]=>
         *     string(6) "0.0002"
         *   }
         * }
         *
         * First result within 300 miles of Honolulu with distances in descending sort order:
         * array(1) {
         *     [0]=>
         *   array(2) {
         *         [0]=>
         *     string(4) "Maui"
         *         [1]=>
         *     string(8) "104.5615"
         *   }
         * }
         * </pre>
         */
        public function georadius($key, $longitude, $latitude, $radius, $unit, array $options = null)
        {
        }

        /**
         * This method is identical to geoRadius except that instead of passing a longitude and latitude as the "source"
         * you pass an existing member in the geospatial set.
         *
         * @param string $key
         * @param string $member
         * @param $radius
         * @param $units
         * @param array|null $options see georadius
         *
         * @return array The zero or more entries that are close enough to the member given the distance and radius specified
         *
         * @see https://redis.io/commands/georadiusbymember
         * @since >= 3.2
         * @see georadius
         *
         * @example
         * <pre>
         * $redis->geoAdd("hawaii", -157.858, 21.306, "Honolulu", -156.331, 20.798, "Maui");
         *
         * echo "Within 300 miles of Honolulu:\n";
         * var_dump($redis->geoRadiusByMember("hawaii", "Honolulu", 300, 'mi'));
         *
         * echo "\nFirst match within 300 miles of Honolulu:\n";
         * var_dump($redis->geoRadiusByMember("hawaii", "Honolulu", 300, 'mi', ['count' => 1]));
         *
         * // Output
         * Within 300 miles of Honolulu:
         * array(2) {
         *  [0]=> string(8) "Honolulu"
         *  [1]=> string(4) "Maui"
         * }
         *
         * First match within 300 miles of Honolulu:
         * array(1) {
         *  [0]=> string(8) "Honolulu"
         * }
         * </pre>
         */
        public function georadiusbymember($key, $member, $radius, $units, array $options = null)
        {
        }

        /**
         * Get or Set the redis config keys.
         *
         * @param string       $operation either `GET` or `SET`
         * @param string       $key       for `SET`, glob-pattern for `GET`
         * @param mixed|string $value     optional string (only for `SET`)
         *
         * @return array Associative array for `GET`, key -> value
         *
         * @see    https://redis.io/commands/config-get
         *
         * @example
         * <pre>
         * $redis->config("GET", "*max-*-entries*");
         * $redis->config("SET", "dir", "/var/run/redis/dumps/");
         * </pre>
         */
        public function config($operation, $key, $value)
        {
        }

        /**
         * Evaluate a LUA script serverside.
         *
         * @param string $script
         * @param array  $args
         * @param int    $numKeys
         *
         * @return mixed What is returned depends on what the LUA script itself returns, which could be a scalar value
         *               (int/string), or an array. Arrays that are returned can also contain other arrays, if that's how it was set up in
         *               your LUA script.  If there is an error executing the LUA script, the getLastError() function can tell you the
         *               message that came back from Redis (e.g. compile error).
         *
         * @see   https://redis.io/commands/eval
         *
         * @example
         * <pre>
         * $redis->eval("return 1"); // Returns an integer: 1
         * $redis->eval("return {1,2,3}"); // Returns Array(1,2,3)
         * $redis->del('mylist');
         * $redis->rpush('mylist','a');
         * $redis->rpush('mylist','b');
         * $redis->rpush('mylist','c');
         * // Nested response:  Array(1,2,3,Array('a','b','c'));
         * $redis->eval("return {1,2,3,redis.call('lrange','mylist',0,-1)}}");
         * </pre>
         */
        public function eval($script, $args = [], $numKeys = 0)
        {
        }

        /**
         * @see eval()
         * @deprecated use Redis::eval()
         *
         * @param string $script
         * @param array  $args
         * @param int    $numKeys
         *
         * @return mixed @see eval()
         */
        public function evaluate($script, $args = [], $numKeys = 0)
        {
        }

        /**
         * Evaluate a LUA script serverside, from the SHA1 hash of the script instead of the script itself.
         * In order to run this command Redis will have to have already loaded the script, either by running it or via
         * the SCRIPT LOAD command.
         *
         * @param string $scriptSha
         * @param array  $args
         * @param int    $numKeys
         *
         * @return mixed @see eval()
         *
         * @see     eval()
         * @see    https://redis.io/commands/evalsha
         *
         * @example
         * <pre>
         * $script = 'return 1';
         * $sha = $redis->script('load', $script);
         * $redis->evalSha($sha); // Returns 1
         * </pre>
         */
        public function evalSha($scriptSha, $args = [], $numKeys = 0)
        {
        }

        /**
         * @see evalSha()
         * @deprecated use Redis::evalSha()
         *
         * @param string $scriptSha
         * @param array  $args
         * @param int    $numKeys
         */
        public function evaluateSha($scriptSha, $args = [], $numKeys = 0)
        {
        }

        /**
         * Execute the Redis SCRIPT command to perform various operations on the scripting subsystem.
         *
         * @param string $command load | flush | kill | exists
         * @param string $script
         *
         * @return mixed
         *
         * @see    https://redis.io/commands/script-load
         * @see    https://redis.io/commands/script-kill
         * @see    https://redis.io/commands/script-flush
         * @see    https://redis.io/commands/script-exists
         *
         * @example
         * <pre>
         * $redis->script('load', $script);
         * $redis->script('flush');
         * $redis->script('kill');
         * $redis->script('exists', $script1, [$script2, $script3, ...]);
         * </pre>
         *
         * SCRIPT LOAD will return the SHA1 hash of the passed script on success, and FALSE on failure.
         * SCRIPT FLUSH should always return TRUE
         * SCRIPT KILL will return true if a script was able to be killed and false if not
         * SCRIPT EXISTS will return an array with TRUE or FALSE for each passed script
         */
        public function script($command, $script)
        {
        }

        /**
         * The last error message (if any).
         *
         * @return string|null A string with the last returned script based error message, or NULL if there is no error
         *
         * @example
         * <pre>
         * $redis->eval('this-is-not-lua');
         * $err = $redis->getLastError();
         * // "ERR Error compiling script (new function): user_script:1: '=' expected near '-'"
         * </pre>
         */
        public function getLastError()
        {
        }

        /**
         * Clear the last error message.
         *
         * @return bool true
         *
         * @example
         * <pre>
         * $redis->set('x', 'a');
         * $redis->incr('x');
         * $err = $redis->getLastError();
         * // "ERR value is not an integer or out of range"
         * $redis->clearLastError();
         * $err = $redis->getLastError();
         * // NULL
         * </pre>
         */
        public function clearLastError()
        {
        }

        /**
         * Issue the CLIENT command with various arguments.
         * The Redis CLIENT command can be used in four ways:
         * - CLIENT LIST
         * - CLIENT GETNAME
         * - CLIENT SETNAME [name]
         * - CLIENT KILL [ip:port].
         *
         * @param string $command
         * @param string $value
         *
         * @return mixed This will vary depending on which client command was executed:
         *               - CLIENT LIST will return an array of arrays with client information.
         *               - CLIENT GETNAME will return the client name or false if none has been set
         *               - CLIENT SETNAME will return true if it can be set and false if not
         *               - CLIENT KILL will return true if the client can be killed, and false if not
         *
         * Note: phpredis will attempt to reconnect so you can actually kill your own connection but may not notice losing it!
         *
         * @see https://redis.io/commands/client-list
         * @see https://redis.io/commands/client-getname
         * @see https://redis.io/commands/client-setname
         * @see https://redis.io/commands/client-kill
         *
         * @example
         * <pre>
         * $redis->client('list'); // Get a list of clients
         * $redis->client('getname'); // Get the name of the current connection
         * $redis->client('setname', 'somename'); // Set the name of the current connection
         * $redis->client('kill', <ip:port>); // Kill the process at ip:port
         * </pre>
         */
        public function client($command, $value = '')
        {
        }

        /**
         * A utility method to prefix the value with the prefix setting for phpredis.
         *
         * @param mixed $value The value you wish to prefix
         *
         * @return string If a prefix is set up, the value now prefixed.
         *                If there is no prefix, the value will be returned unchanged.
         *
         * @example
         * <pre>
         * $redis->setOption(Redis::OPT_PREFIX, 'my-prefix:');
         * $redis->_prefix('my-value'); // Will return 'my-prefix:my-value'
         * </pre>
         */
        public function _prefix($value)
        {
        }

        /**
         * A utility method to unserialize data with whatever serializer is set up.  If there is no serializer set, the
         * value will be returned unchanged.  If there is a serializer set up, and the data passed in is malformed, an
         * exception will be thrown. This can be useful if phpredis is serializing values, and you return something from
         * redis in a LUA script that is serialized.
         *
         * @param string $value The value to be unserialized
         *
         * @return mixed
         *
         * @example
         * <pre>
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);
         * $redis->_unserialize('a:3:{i:0;i:1;i:1;i:2;i:2;i:3;}'); // Will return Array(1,2,3)
         * </pre>
         */
        public function _unserialize($value)
        {
        }

        /**
         * A utility method to serialize values manually. This method allows you to serialize a value with whatever
         * serializer is configured, manually. This can be useful for serialization/unserialization of data going in
         * and out of EVAL commands as phpredis can't automatically do this itself.  Note that if no serializer is
         * set, phpredis will change Array values to 'Array', and Objects to 'Object'.
         *
         * @param mixed $value the value to be serialized
         *
         * @return mixed
         *
         * @example
         * <pre>
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);
         * $redis->_serialize("foo"); // returns "foo"
         * $redis->_serialize(Array()); // Returns "Array"
         * $redis->_serialize(new stdClass()); // Returns "Object"
         *
         * $redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);
         * $redis->_serialize("foo"); // Returns 's:3:"foo";'
         * </pre>
         */
        public function _serialize($value)
        {
        }

        /**
         * Dump a key out of a redis database, the value of which can later be passed into redis using the RESTORE command.
         * The data that comes out of DUMP is a binary representation of the key as Redis stores it.
         *
         * @param string $key
         *
         * @return bool|string The Redis encoded value of the key, or FALSE if the key doesn't exist
         *
         * @see    https://redis.io/commands/dump
         *
         * @example
         * <pre>
         * $redis->set('foo', 'bar');
         * $val = $redis->dump('foo'); // $val will be the Redis encoded key value
         * </pre>
         */
        public function dump($key)
        {
        }

        /**
         * Restore a key from the result of a DUMP operation.
         *
         * @param string $key   The key name
         * @param int    $ttl   How long the key should live (if zero, no expire will be set on the key)
         * @param string $value (binary).  The Redis encoded key value (from DUMP)
         *
         * @return bool
         *
         * @see    https://redis.io/commands/restore
         *
         * @example
         * <pre>
         * $redis->set('foo', 'bar');
         * $val = $redis->dump('foo');
         * $redis->restore('bar', 0, $val); // The key 'bar', will now be equal to the key 'foo'
         * </pre>
         */
        public function restore($key, $ttl, $value)
        {
        }

        /**
         * Migrates a key to a different Redis instance.
         *
         * @param string $host    The destination host
         * @param int    $port    the TCP port to connect to
         * @param string $key     the key to migrate
         * @param int    $db      the target DB
         * @param int    $timeout the maximum amount of time given to this transfer
         * @param bool   $copy    should we send the COPY flag to redis
         * @param bool   $replace should we send the REPLACE flag to redis
         *
         * @return bool
         *
         * @see    https://redis.io/commands/migrate
         *
         * @example
         * <pre>
         * $redis->migrate('backup', 6379, 'foo', 0, 3600);
         * </pre>
         */
        public function migrate($host, $port, $key, $db, $timeout, $copy = false, $replace = false)
        {
        }

        /**
         * Return the current Redis server time.
         *
         * @return array if successfull, the time will come back as an associative array with element zero being the
         *               unix timestamp, and element one being microseconds
         *
         * @see    https://redis.io/commands/time
         *
         * @example
         * <pre>
         * var_dump( $redis->time() );
         * // array(2) {
         * //   [0] => string(10) "1342364352"
         * //   [1] => string(6) "253002"
         * // }
         * </pre>
         */
        public function time()
        {
        }

        /**
         * Scan the keyspace for keys.
         *
         * @param int    $iterator iterator, initialized to NULL
         * @param string $pattern  pattern to match
         * @param int    $count    count of keys per iteration (only a suggestion to Redis)
         *
         * @return array|bool this function will return an array of keys or FALSE if there are no more keys
         *
         * @see   https://redis.io/commands/scan
         *
         * @example
         * <pre>
         * $iterator = null;
         * while(false !== ($keys = $redis->scan($iterator))) {
         *     foreach($keys as $key) {
         *         echo $key . PHP_EOL;
         *     }
         * }
         * </pre>
         */
        public function scan(&$iterator, $pattern = null, $count = 0)
        {
        }

        /**
         * Adds all the element arguments to the HyperLogLog data structure stored at the key.
         *
         * @param string $key
         *
         * @return bool
         *
         * @see    https://redis.io/commands/pfadd
         *
         * @example $redis->pfAdd('key', array('elem1', 'elem2'))
         */
        public function pfAdd($key, array $elements)
        {
        }

        /**
         * When called with a single key, returns the approximated cardinality computed by the HyperLogLog data
         * structure stored at the specified variable, which is 0 if the variable does not exist.
         *
         * @param array|string $key
         *
         * @return int
         *
         * @see    https://redis.io/commands/pfcount
         *
         * @example
         * <pre>
         * $redis->pfAdd('key1', array('elem1', 'elem2'));
         * $redis->pfAdd('key2', array('elem3', 'elem2'));
         * $redis->pfCount('key1'); // int(2)
         * $redis->pfCount(array('key1', 'key2')); // int(3)
         */
        public function pfCount($key)
        {
        }

        /**
         * Merge multiple HyperLogLog values into an unique value that will approximate the cardinality
         * of the union of the observed Sets of the source HyperLogLog structures.
         *
         * @param string $destKey
         *
         * @return bool
         *
         * @see    https://redis.io/commands/pfmerge
         *
         * @example
         * <pre>
         * $redis->pfAdd('key1', array('elem1', 'elem2'));
         * $redis->pfAdd('key2', array('elem3', 'elem2'));
         * $redis->pfMerge('key3', array('key1', 'key2'));
         * $redis->pfCount('key3'); // int(3)
         */
        public function pfMerge($destKey, array $sourceKeys)
        {
        }

        /**
         * Send arbitrary things to the redis server.
         *
         * @param string $command   required command to send to the server
         * @param mixed  $arguments optional variable amount of arguments to send to the server
         *
         * @return mixed
         *
         * @example
         * <pre>
         * $redis->rawCommand('SET', 'key', 'value'); // bool(true)
         * $redis->rawCommand('GET", 'key'); // string(5) "value"
         * </pre>
         */
        public function rawCommand($command, $arguments)
        {
        }

        /**
         * Detect whether we're in ATOMIC/MULTI/PIPELINE mode.
         *
         * @return int Either Redis::ATOMIC, Redis::MULTI or Redis::PIPELINE
         *
         * @example $redis->getMode();
         */
        public function getMode()
        {
        }

        /**
         * Acknowledge one or more messages on behalf of a consumer group.
         *
         * @param string $stream
         * @param string $group
         * @param array  $messages
         *
         * @return int the number of messages Redis reports as acknowledged
         *
         * @see    https://redis.io/commands/xack
         *
         * @example
         * <pre>
         * $redis->xAck('stream', 'group1', ['1530063064286-0', '1530063064286-1']);
         * </pre>
         */
        public function xAck($stream, $group, $messages)
        {
        }

        /**
         * Add a message to a stream.
         *
         * @param string $key
         * @param string $id
         * @param array  $messages
         * @param int    $maxLen
         * @param bool   $isApproximate
         *
         * @return string the added message ID
         *
         * @see    https://redis.io/commands/xadd
         *
         * @example
         * <pre>
         * $redis->xAdd('mystream', "*", ['field' => 'value']);
         * $redis->xAdd('mystream', "*", ['field' => 'value'], 10);
         * $redis->xAdd('mystream', "*", ['field' => 'value'], 10, true);
         * </pre>
         */
        public function xAdd($key, $id, $messages, $maxLen = 0, $isApproximate = false)
        {
        }

        /**
         * Claim ownership of one or more pending messages.
         *
         * @param string $key
         * @param string $group
         * @param string $consumer
         * @param int    $minIdleTime
         * @param array  $ids
         * @param array  $options     ['IDLE' => $value, 'TIME' => $value, 'RETRYCOUNT' => $value, 'FORCE', 'JUSTID']
         *
         * @return array either an array of message IDs along with corresponding data, or just an array of IDs
         *               (if the 'JUSTID' option was passed)
         *
         * @see    https://redis.io/commands/xclaim
         *
         * @example
         * <pre>
         * $ids = ['1530113681011-0', '1530113681011-1', '1530113681011-2'];
         *
         * // Without any options
         * $redis->xClaim('mystream', 'group1', 'myconsumer1', 0, $ids);
         *
         * // With options
         * $redis->xClaim(
         *     'mystream', 'group1', 'myconsumer2', 0, $ids,
         *     [
         *         'IDLE' => time() * 1000,
         *         'RETRYCOUNT' => 5,
         *         'FORCE',
         *         'JUSTID'
         *     ]
         * );
         * </pre>
         */
        public function xClaim($key, $group, $consumer, $minIdleTime, $ids, $options = [])
        {
        }

        /**
         * Delete one or more messages from a stream.
         *
         * @param string $key
         * @param array  $ids
         *
         * @return int The number of messages removed
         *
         * @see    https://redis.io/commands/xdel
         *
         * @example
         * <pre>
         * $redis->xDel('mystream', ['1530115304877-0', '1530115305731-0']);
         * </pre>
         */
        public function xDel($key, $ids)
        {
        }

        /**
         * @param string $operation e.g.: 'HELP', 'SETID', 'DELGROUP', 'CREATE', 'DELCONSUMER'
         * @param string $key
         * @param string $group
         * @param string $msgId
         * @param bool   $mkStream
         *
         * @return mixed this command returns different types depending on the specific XGROUP command executed
         *
         * @see    https://redis.io/commands/xgroup
         *
         * @example
         * <pre>
         * $redis->xGroup('CREATE', 'mystream', 'mygroup', 0);
         * $redis->xGroup('CREATE', 'mystream', 'mygroup', 0, true); // create stream
         * $redis->xGroup('DESTROY', 'mystream', 'mygroup');
         * </pre>
         */
        public function xGroup($operation, $key, $group, $msgId = '', $mkStream = false)
        {
        }

        /**
         * Get information about a stream or consumer groups.
         *
         * @param string $operation e.g.: 'CONSUMERS', 'GROUPS', 'STREAM', 'HELP'
         * @param string $stream
         * @param string $group
         *
         * @return mixed this command returns different types depending on which subcommand is used
         *
         * @see    https://redis.io/commands/xinfo
         *
         * @example
         * <pre>
         * $redis->xInfo('STREAM', 'mystream');
         * </pre>
         */
        public function xInfo($operation, $stream, $group)
        {
        }

        /**
         * Get the length of a given stream.
         *
         * @param string $stream
         *
         * @return int the number of messages in the stream
         *
         * @see    https://redis.io/commands/xlen
         *
         * @example
         * <pre>
         * $redis->xLen('mystream');
         * </pre>
         */
        public function xLen($stream)
        {
        }

        /**
         * Get information about pending messages in a given stream.
         *
         * @param string $stream
         * @param string $group
         * @param string $start
         * @param string $end
         * @param int    $count
         * @param string $consumer
         *
         * @return array information about the pending messages, in various forms depending on
         *               the specific invocation of XPENDING
         *
         * @see https://redis.io/commands/xpending
         *
         * @example
         * <pre>
         * $redis->xPending('mystream', 'mygroup');
         * $redis->xPending('mystream', 'mygroup', '-', '+', 1, 'consumer-1');
         * </pre>
         */
        public function xPending($stream, $group, $start = null, $end = null, $count = null, $consumer = null)
        {
        }

        /**
         * Get a range of messages from a given stream.
         *
         * @param string $stream
         * @param string $start
         * @param string $end
         * @param int    $count
         *
         * @return array the messages in the stream within the requested range
         *
         * @see    https://redis.io/commands/xrange
         *
         * @example
         * <pre>
         * // Get everything in this stream
         * $redis->xRange('mystream', '-', '+');
         * // Only the first two messages
         * $redis->xRange('mystream', '-', '+', 2);
         * </pre>
         */
        public function xRange($stream, $start, $end, $count = null)
        {
        }

        /**
         * Read data from one or more streams and only return IDs greater than sent in the command.
         *
         * @param array      $streams
         * @param int|string $count
         * @param int|string $block
         *
         * @return array The messages in the stream newer than the IDs passed to Redis (if any)
         *
         * @see    https://redis.io/commands/xread
         *
         * @example
         * <pre>
         * $redis->xRead(['stream1' => '1535222584555-0', 'stream2' => '1535222584555-0']);
         * </pre>
         */
        public function xRead($streams, $count = null, $block = null)
        {
        }

        /**
         * This method is similar to xRead except that it supports reading messages for a specific consumer group.
         *
         * @param string   $group
         * @param string   $consumer
         * @param array    $streams
         * @param int|null $count
         * @param int|null $block
         *
         * @return array the messages delivered to this consumer group (if any)
         *
         * @see    https://redis.io/commands/xreadgroup
         *
         * @example
         * <pre>
         * // Consume messages for 'mygroup', 'consumer1'
         * $redis->xReadGroup('mygroup', 'consumer1', ['s1' => 0, 's2' => 0]);
         * // Read a single message as 'consumer2' for up to a second until a message arrives.
         * $redis->xReadGroup('mygroup', 'consumer2', ['s1' => 0, 's2' => 0], 1, 1000);
         * </pre>
         */
        public function xReadGroup($group, $consumer, $streams, $count = null, $block = null)
        {
        }

        /**
         * This is identical to xRange except the results come back in reverse order.
         * Also note that Redis reverses the order of "start" and "end".
         *
         * @param string $stream
         * @param string $end
         * @param string $start
         * @param int    $count
         *
         * @return array The messages in the range specified
         *
         * @see    https://redis.io/commands/xrevrange
         *
         * @example
         * <pre>
         * $redis->xRevRange('mystream', '+', '-');
         * </pre>
         */
        public function xRevRange($stream, $end, $start, $count = null)
        {
        }

        /**
         * Trim the stream length to a given maximum.
         * If the "approximate" flag is pasesed, Redis will use your size as a hint but only trim trees in whole nodes
         * (this is more efficient).
         *
         * @param string $stream
         * @param int    $maxLen
         * @param bool   $isApproximate
         *
         * @return int the number of messages trimed from the stream
         *
         * @see    https://redis.io/commands/xtrim
         *
         * @example
         * <pre>
         * // Trim to exactly 100 messages
         * $redis->xTrim('mystream', 100);
         * // Let Redis approximate the trimming
         * $redis->xTrim('mystream', 100, true);
         * </pre>
         */
        public function xTrim($stream, $maxLen, $isApproximate)
        {
        }

        /**
         * Adds a values to the set value stored at key.
         *
         * @param string $key    Required key
         * @param array  $values Required values
         *
         * @return bool|int The number of elements added to the set.
         *                  If this value is already in the set, FALSE is returned
         *
         * @see    https://redis.io/commands/sadd
         * @see    https://github.com/phpredis/phpredis/commit/3491b188e0022f75b938738f7542603c7aae9077
         * @since   phpredis 2.2.8
         *
         * @example
         * <pre>
         * $redis->sAddArray('k', array('v1'));                // boolean
         * $redis->sAddArray('k', array('v1', 'v2', 'v3'));    // boolean
         * </pre>
         */
        public function sAddArray($key, array $values)
        {
        }
    }

    class RedisException extends Exception
    {
    }

    /**
     * @mixin \Redis
     */
    class RedisArray
    {
        /**
         * Constructor.
         *
         * @param array|string $hosts Name of the redis array from redis.ini or array of hosts to construct the array with
         * @param array        $opts  Array of options
         *
         * @see    https://github.com/nicolasff/phpredis/blob/master/arrays.markdown
         */
        public function __construct($hosts, array $opts = null) {}

        /**
         * @return array list of hosts for the selected array
         */
        public function _hosts()
        {
        }

        /**
         * @return string the name of the function used to extract key parts during consistent hashing
         */
        public function _function()
        {
        }

        /**
         * @param string $key The key for which you want to lookup the host
         *
         * @return string the host to be used for a certain key
         */
        public function _target($key)
        {
        }

        /**
         * Use this function when a new node is added and keys need to be rehashed.
         */
        public function _rehash()
        {
        }
    }
}