PHP-Mmecache操作类详细介绍

下面类对memcache进行封装，包括了对memcache的添加，读取，清空，删除，获取服务器的信息，缓存服务池等。classjoememcache{privatestatic$_instance; private$_memcache; private$_which = 0; private$_memservers; publicstaticfunctiongetInstance() {if (! (self::$_instanceinstanceof joememcache)) { self::$_instance = newself(); } return is_object(self::$_instance->_memcache) ? self::$_instance : false; } privatefunction__construct() {if (extension_loaded('memcache')) { $this->_memcache = new Memcache(); $this->_which = 1; } elseif (extension_loaded('memcached')) { $this->_memcache = new Memcached(); $this->_which = 2; } else$this->_memcache = FALSE; } /** * 保存缓存 * @param unknown $key * @param unknown $data * @param number $ttl * @param string $isCompress * @return boolean */publicfunctionSave($key, $data, $ttl = 60,$isCompress = FALSE){if($this->_which == 1) return$this->_memcache->set($key, array($data, time(), $ttl), !$isCompress ? 0 : MEMCACHE_COMPRESSED, $ttl);//使用time() 函数最新elseif($this->_which == 2) return$this->_memcache->set($key, array($data, time(), $ttl), $ttl); elsereturnFALSE; } /** * 读取缓存信息 * @param unknown $key * @return Ambigous |boolean */publicfunctionreadMetaData($key){$value = $this->_memcache->get($key); if(is_array($value) && count($value) == 3){ list($data, $time, $ttl) = $value; return (time() $time + $ttl) ? $data : array(); } else { returnfalse; } } /** * @deprecated 读取多个缓存信息 * @param array $array * @return 成功$value(array), 失败FALSE(bool) */publicfunctionreadMultiData($keys) {if(!is_array($keys)) { returnFALSE; } $rtn = array(); if($this->_which == 1) $rtn = $this->_memcache->get($keys); elseif($this->_which == 2) $rtn = $this->_memcache->getMulti($keys); $now = time(); foreach($rtnas$key=>&$v) { if(!empty($v)) { list($data, $time, $ttl) = $v; $v = ($now $time + $ttl) ? $data : array(); } } return$rtn; } /** * @description 读取缓存 * @param $key 查询索引key * @return 成功 array 失败 FALSE */publicfunctionRead($key) {$data = $this->_memcache->get($key); return is_array($data) ? $data[0] : FALSE; } /** * @description 删除缓存 * @param $key 将要删除的key * return bool 成功 TRUE 失败 FALSE */publicfunctionDelete($key) {return$this->_memcache->delete($key); } /** * @description 清空所有缓存 * @return bool true or false */publicfunctionClear() {return$this->_memcache->flush(); } /** * 获取缓存服务器池中所有服务器统计信息 * @return array */publicfunctiongetExtendedStats() {//return $this->_memcache->getExtendedStats();if($this->_which == 1) { return$this->_memcache->getExtendedStats(); } elseif($this->_which == 2) return$this->_memcache->getServerList(); elsereturnFALSE; } /** * 缓存服务器池 */publicfunctionaddServer() {foreach ($this->_memservers as$h) { $this->_memcache->addServer($h['host'], isset($h['port']) ? $h['port'] : 11211); // 默认端口为11211 } } /** * 获取memecache服务器地址 */publicfunctiongetHost() {return$this->_memservers; } /** * 设置memcache服务器地址 */publicfunctionsetHost(array $servers) {if (is_array($servers) && ! empty($servers)) { $this->_memservers = $servers; $this->addServer(); } } privatefunction__clone() {}}登录后复制以下是对封装类的使用方法//初始化memcache$memcache = joememcache::getInstance(); //是否开启memcache扩展if($memcache){ //memcache的配置参数，放在配置文件中global$memServer,$memKey; //设置memecache服务器地址$memcache->setHost($memServer); //通过key读取数据$news = $memcache->readMetaData($memKey['sharetypekey']['10001']['Key'].$id); //memcache没有当前key的数据，则从数据库查询并保存到memecache服务器中if(!$news){ $news = $this->getCurSharenewsInfo($id); $memcache->Save($memKey['sharetypekey']['10001']['Key'].$id,$news,$memKey['sharetypekey']['10001']['Time']); } }else{ //直接数据库查询数据$news = $this->getCurSharenewsInfo($id); }登录后复制').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i ').text(i)); }; $numbering.fadeIn(1700); }); }); 以上就介绍了 PHP-Mmecache操作类详细介绍，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。