php将文件类型session写入memcache

来源：互联网发布：临床试验数据核查编辑：程序博客网时间：2024/05/14 07:31
<?php        class MemSession{        private static $handler = null;        private static $lifetime = null;        private static $time = null;        const MS = 'session';                private static function init($handler){            self::$handler = $handler;            self::$lifetime = ini_get('session.gc_maxlifetime');            self::$time = time();        }                public static function start($memcache){            self::init($memcache);            //调用类中的方法要用数组,__CLASS__代表本类            session_set_save_handler(                array(__CLASS__,'open'),                array(__CLASS__,'close'),                array(__CLASS__,'read'),                array(__CLASS__,'write'),                array(__CLASS__,'destroy'),                array(__CLASS__,'gc')            );            session_start();        }                public static function open($path,$name){                    }        public static function close(){                    }                public static function read($PHPSESSID){            $val = self::$handler->get(self::session_key($PHPSESSID));                        if($val===false || $val==null){                return false;            }            return $val;        }        public static function write($PHPSESSID,$data){            $method = $data? 'set':'replace';            return self::$handler->$method(self::session_key($PHPSESSID),$data,MEMCACHE_COMPRESSED,self::$lifetime);        }                public static function destroy($PHPSESSID){            return self::$handle->delete(self::session_key($PHPSESSID));        }        //memcache本身就有限定时间，数据自动销毁，所以可不使用gc方法        public static function gc($lifetime){            return true;        }                //给sessionID加前缀，避免key重复        private static function session_key($PHPSESSID){            $session_key = self::MS.$PHPSESSID;            return $session_key;        }            }    $mem = new Memcache;    $mem->connect("localhost",11211) or die("could not connect");    MemSession::start($mem);
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