session写入memcache中管理

378

<?php
class MemSession{
private static $handler=null;
private static $lifetime=null;
private static $time= null;
const NS='session_';
private static  function init($handler){
self::$handler=$handler;
self::$lifetime=ini_get('session.gc_maxlifetime');
self::$time=time();
}
public static function start(Memcache $memcache){
self::init($memcache);
session_set_save_handler(
array(__CLASS__,&quot;open&quot;),
array(__CLASS__,&quot;close&quot;),
array(__CLASS__,&quot;read&quot;),
array(__CLASS__,&quot;write&quot;),
array(__CLASS__,&quot;destroy&quot;),
array(__CLASS__,&quot;gc&quot;)
);
session_start();
}
public static function open($path,$name){
return true;
}
public static function close(){
return true;
}
public static function read($PHPSESSID){
$out=self::$handler->get(self::session_key($PHPSESSID));
if ($out===false || $out==null) {
return '';
}
return $out;
}
public static function write($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::$handler->delete(self::session_key($PHPSESSID));
}
public static function gc($lifetime){
return true;
}
private static function session_key($PHPSESSID){
$session_key=self::NS.$PHPSESSID;
return $session_key;
}
}
$memcache = new Memcache;
$memcache->connect(&quot;localhost&quot;,11211) or die(&quot;could not connect memcache&quot;);
MemSession::start($memcache);
?>引用：<?php
define('SITE_PATH',getcwd());
include_once(SITE_PATH.&quot;/class/memsession.class.php&quot;);
echo $_SESSION['aa'];
echo &quot;<br>&quot;;
echo $_SESSION['bb'];
if ($_SESSION['aa']!=&quot;&quot;) {
echo &quot;<br>&quot;;
echo &quot;aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa&quot;;
$_SESSION['bb']=null;
}
?>






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