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- <?php
- declare (strict_types = 1);
- namespace library\utils;
- // +----------------------------------------------------------------------
- // | [ WE CAN DO IT MORE SIMPLE ]
- // +----------------------------------------------------------------------
- // | Copyright (c) 2018-2020 rights reserved.
- // +----------------------------------------------------------------------
- // |
- // +----------------------------------------------------------------------
- // | Date: 2021/2/20 下午1:42
- // +----------------------------------------------------------------------
- class RedisCli {
- // 是否使用 M/S 的读写集群方案
- private $_isUseCluster = false;
- // Slave 句柄标记
- private $_sn = 0;
- // 服务器连接句柄
- private $_linkHandle = array(
- 'master' => null, // 只支持一台 Master
- 'slave' => array(), // 可以有多台 Slave
- );
- /**
- * 构造函数
- *
- * @param boolean $isUseCluster 是否采用 M/S 方案
- */
- public function __construct($isUseCluster = false) {
- $this->_isUseCluster = $isUseCluster;
- }
- /**
- * 连接服务器,注意:这里使用长连接,提高效率,但不会自动关闭
- *
- * @param array $config Redis服务器配置
- * @param boolean $isMaster 当前添加的服务器是否为 Master 服务器
- * @return boolean
- */
- public function connect($config = array('host' => '127.0.0.1', 'port' => 6379), $auth = array(), $isMaster = true) {
- // default port
- if (!isset($config['port'])) {
- $config['port'] = 6379;
- }
- // 设置 Master 连接
- if ($isMaster) {
- $this->_linkHandle['master'] = new \Redis();
- $ret = $this->_linkHandle['master']->pconnect($config['host'], $config['port']);
- if (count($auth) > 0 && !empty($auth[0])) {
- if ($this->_linkHandle['master']->auth($auth[0] . ":" . $auth[1]) === false) {
- die('Redis PassWord Error');
- }
- }
- } else {
- // 多个 Slave 连接
- $this->_linkHandle['slave'][$this->_sn] = new Redis();
- $ret = $this->_linkHandle['slave'][$this->_sn]->pconnect($config['host'], $config['port']);
- if (count($auth) > 0 && !empty($auth[0])) {
- if ($this->_linkHandle['master']->auth($auth[0] . ":" . $auth[1]) === false) {
- die('Redis PassWord Error');
- }
- }
- ++$this->_sn;
- }
- return $ret;
- }
- /**
- * 关闭连接
- *
- * @param int $flag 关闭选择 0:关闭 Master 1:关闭 Slave 2:关闭所有
- * @return boolean
- */
- public function close($flag = 2) {
- switch ($flag) {
- // 关闭 Master
- case 0:
- $this->getRedis()->close();
- break;
- // 关闭 Slave
- case 1:
- for ($i = 0; $i < $this->_sn; ++$i) {
- $this->_linkHandle['slave'][$i]->close();
- }
- break;
- // 关闭所有
- case 1:
- $this->getRedis()->close();
- for ($i = 0; $i < $this->_sn; ++$i) {
- $this->_linkHandle['slave'][$i]->close();
- }
- break;
- }
- return true;
- }
- /**
- * 得到 Redis 原始对象可以有更多的操作
- *
- * @param boolean $isMaster 返回服务器的类型 true:返回Master false:返回Slave
- * @param boolean $slaveOne 返回的Slave选择 true:负载均衡随机返回一个Slave选择 false:返回所有的Slave选择
- * @return redis object
- */
- public function getRedis($isMaster = true, $slaveOne = true) {
- // 只返回 Master
- if ($isMaster) {
- return $this->_linkHandle['master'];
- } else {
- return $slaveOne ? $this->_getSlaveRedis() : $this->_linkHandle['slave'];
- }
- }
- /**
- * 写缓存
- *
- * @param string $key 组存KEY
- * @param string $value 缓存值
- * @param int $expire 过期时间, 0:表示无过期时间
- */
- public function set($key, $value, $expire = 0) {
- // 永不超时
- if ($expire == 0) {
- $ret = $this->getRedis()->set($key, $value);
- } else {
- $ret = $this->getRedis()->setex($key, $expire, $value);
- }
- return $ret;
- }
- /**
- * 读缓存
- *
- * @param string $key 缓存KEY,支持一次取多个 $key = array('key1','key2')
- * @return string || boolean 失败返回 false, 成功返回字符串
- */
- public function get($key) {
- // 是否一次取多个值
- $func = is_array($key) ? 'mGet' : 'get';
- // 没有使用M/S
- if (!$this->_isUseCluster) {
- return $this->getRedis()->{$func}($key);
- }
- // 使用了 M/S
- return $this->_getSlaveRedis()->{$func}($key);
- }
- /*
- // magic function
- public function __call($name,$arguments){
- return call_user_func($name,$arguments);
- }
- */
- /**
- * 条件形式设置缓存,如果 key 不存时就设置,存在时设置失败
- *
- * @param string $key 缓存KEY
- * @param string $value 缓存值
- * @return boolean
- */
- public function setnx($key, $value) {
- return $this->getRedis()->setnx($key, $value);
- }
- /**
- * 删除缓存
- *
- * @param string || array $key 缓存KEY,支持单个健:"key1" 或多个健:array('key1','key2')
- * @return int 删除的健的数量
- */
- public function remove($key) {
- // $key => "key1" || array('key1','key2')
- return $this->getRedis()->delete($key);
- }
- /**
- * 值加加操作,类似 ++$i ,如果 key 不存在时自动设置为 0 后进行加加操作
- *
- * @param string $key 缓存KEY
- * @param int $default 操作时的默认值
- * @return int 操作后的值
- */
- public function incr($key, $default = 1) {
- if ($default == 1) {
- return $this->getRedis()->incr($key);
- } else {
- return $this->getRedis()->incrBy($key, $default);
- }
- }
- /**
- * 值减减操作,类似 --$i ,如果 key 不存在时自动设置为 0 后进行减减操作
- *
- * @param string $key 缓存KEY
- * @param int $default 操作时的默认值
- * @return int 操作后的值
- */
- public function decr($key, $default = 1) {
- if ($default == 1) {
- return $this->getRedis()->decr($key);
- } else {
- return $this->getRedis()->decrBy($key, $default);
- }
- }
- /**
- * 添空当前数据库
- *
- * @return boolean
- */
- public function clear() {
- return $this->getRedis()->flushDB();
- }
- /* =================== 以下私有方法 =================== */
- /**
- * 随机 HASH 得到 Redis Slave 服务器句柄
- *
- * @return redis object
- */
- private function _getSlaveRedis() {
- // 就一台 Slave 机直接返回
- if ($this->_sn <= 1) {
- return $this->_linkHandle['slave'][0];
- }
- // 随机 Hash 得到 Slave 的句柄
- $hash = $this->_hashId(mt_rand(), $this->_sn);
- return $this->_linkHandle['slave'][$hash];
- }
- /**
- * 根据ID得到 hash 后 0~m-1 之间的值
- *
- * @param string $id
- * @param int $m
- * @return int
- */
- private function _hashId($id, $m = 10) {
- //把字符串K转换为 0~m-1 之间的一个值作为对应记录的散列地址
- $k = md5($id);
- $l = strlen($k);
- $b = bin2hex($k);
- $h = 0;
- for ($i = 0; $i < $l; $i++) {
- //相加模式HASH
- $h += substr($b, $i * 2, 2);
- }
- $hash = ($h * 1) % $m;
- return $hash;
- }
- /**
- * lpush
- */
- public function lpush($key, $value) {
- return $this->getRedis()->lpush($key, $value);
- }
- /**
- * add lpop
- */
- public function lpop($key) {
- return $this->getRedis()->lpop($key);
- }
- /**
- * lrange
- */
- public function lrange($key, $start, $end) {
- return $this->getRedis()->lrange($key, $start, $end);
- }
- /**
- * set hash opeation
- */
- public function hset($name, $key, $value) {
- if (is_array($value)) {
- return $this->getRedis()->hset($name, $key, serialize($value));
- }
- return $this->getRedis()->hset($name, $key, $value);
- }
- /**
- * get hash opeation
- */
- public function hget($name, $key = null, $serialize = true) {
- if ($key) {
- $row = $this->getRedis()->hget($name, $key);
- if ($row && $serialize) {
- unserialize($row);
- }
- return $row;
- }
- return $this->getRedis()->hgetAll($name);
- }
- /**
- * delete hash opeation
- */
- public function hdel($name, $key = null) {
- if ($key) {
- return $this->getRedis()->hdel($name, $key);
- }
- return $this->getRedis()->hdel($name);
- }
- /**
- * Transaction start
- */
- public function multi() {
- return $this->getRedis()->multi();
- }
- /**
- * Transaction send
- */
- public function exec() {
- return $this->getRedis()->exec();
- }
- }
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