PHP实现操作redis的封装类完整实例_PHP
本文实例讲述了PHP实现操作redis的封装类。分享给大家供大家参考,具体如下:
<?php /** * Redis 操作,支持 Master/Slave 的负载集群 * * @author jackluo */ class RedisCluster{ // 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), $isMaster=true){ // default port if(!isset($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']); }else{ // 多个 Slave 连接 $this->_linkHandle['slave'][$this->_sn] = new Redis(); $ret = $this->_linkHandle['slave'][$this->_sn]->pconnect($config['host'],$config['port']); ++$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(); } }// End Class // ================= TEST DEMO ================= // 只有一台 Redis 的应用 $redis = new RedisCluster(); $redis->connect(array('host'=>'127.0.0.1','port'=>6379)); //* $cron_id = 10001; $CRON_KEY = 'CRON_LIST'; // $PHONE_KEY = 'PHONE_LIST:'.$cron_id;// //cron info $cron = $redis->hget($CRON_KEY,$cron_id); if(empty($cron)){ $cron = array('id'=>10,'name'=>'jackluo');//mysql data $redis->hset($CRON_KEY,$cron_id,$cron); // set redis } //phone list $phone_list = $redis->lrange($PHONE_KEY,0,-1); print_r($phone_list); if(empty($phone_list)){ $phone_list =explode(',','13228191831,18608041585'); //mysql data //join list if($phone_list){ $redis->multi(); foreach ($phone_list as $phone) { $redis->lpush($PHONE_KEY,$phone); } $redis->exec(); } } print_r($phone_list); /*$list = $redis->hget($cron_list,); var_dump($list);*/ //*/ //$redis->set('id',35); /* $redis->lpush('test','1111'); $redis->lpush('test','2222'); $redis->lpush('test','3333'); $list = $redis->lrange('test',0,-1); print_r($list); $lpop = $redis->lpop('test'); print_r($lpop); $lpop = $redis->lpop('test'); print_r($lpop); $lpop = $redis->lpop('test'); print_r($lpop); */ // var_dump($redis->get('id'));
希望本文所述对大家PHP程序设计有所帮助。

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