DBMemcache，这个我喜欢

来源：互联网发布：金枝欲孽甄嬛传知乎编辑：程序博客网时间：2024/05/07 16:04
<?php/** * 缓存库 *  * @package libs * @category API * @author 周阳<305846826@qq.com> * @copyright 街网科技 * @version 2.0 * @link http://www.jieone.com */class DBMemcache{    const SERVER_CODE = 1;    /**     * 服务器IP     * @var unknown     */    const SERVER_IP="127.0.0.1";    /**     * 服务器端口     * @var unknown     */    const SERVER_PORT=11211;    /**     * 设置Session数据     * @param string $key     * @param string $value     */    public function setSession($key, $value){        $memcache = new Memcache;        $memcache->connect(self::SERVER_IP, self::SERVER_PORT);        $memcache->delete($key);        $ret = $memcache->set($key, $value, MEMCACHE_COMPRESSED);        $memcache->close();        return $ret;    }    /**     * 删除Sesson数据     * @param string $key     */    private function deleteSession($key){        $memcache = new Memcache;        $memcache->connect(self::SERVER_IP, self::SERVER_PORT);        $memcache->delete($key);        $memcache->close();    }    /**     * 得到Session数据     * @param string $key     */    public function getSession($key){        $memcache = new Memcache;        $memcache->connect(self::SERVER_IP, self::SERVER_PORT);        $data = $memcache->get($key);        $memcache->close();        return $data;    }    /**     * 保存用户登录SID     * 保存sessionVal 是为了防止重新登录     * @param int $userid 用户ID     * @param int $type 分类     */    public static function saveSid($userid,$type){        $time=time();        $sessionid = md5($type . $userid .$time);        $sessionval = md5($type . $time . $userid);        //删除原来的信息        $val=self::getSession($userid.$type);        if(!empty($val)&&isset($val["sessionid"])){            self::deleteSession($val["sessionid"]);        }                self::setSession($sessionid, array('userid' => $userid, 'type' => $type, 'sessionval' => $sessionval,'time' => $time));        self::setSession($userid.$type, array("sessionval"=>$sessionval,"sessionid"=>$sessionid));        return $sessionid;    }   /**    * 删除SID    * @param string $sessionid    */    public static function deleteSid($sessionid){        $key = self::getSession($sessionid);        if(empty($key)){            return false;        }        if (isset($key["sessionval"])) {            self::deleteSession($key["sessionval"]);        }        self::deleteSession($sessionid);    }    /**     * 得到用户ID     */    public static function getUserID($sessionid){        $sessionid = trim($sessionid);        if(!$sessionid){            return 0;        }        $key = self::getSession($sessionid);        if (empty($key)) {            return 0;        }                if(!isset($key["userid"])||!isset($key["type"])){            return 0;        }        $type=$key['type'];        $userid=$key['userid'];                $val=self::getSession($userid.$type);        if(!isset($val["sessionval"])||!isset($val["sessionid"])){            return 0;        }        if($val["sessionval"]!=$key['sessionval']) {            return 0;        }        return $userid;    }}
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