function session_load($session_id)
{
$data = file_get_contents('/var/lib/php/session2/sess_' . $session_id);
return session_unserialize($data);
}
/**
* Get a value/object from the global cache.
*
* @param string $key the key of the value
* @param mixed $default a default return value if the key can not be found in the cache
* @return mixed The object from the cache or `$default`
*/
function globalcache_get($key, $default = false)
{
if (!hook_already_fired(HOOK_POST_INIT)) {
return $default;
}
global $CONFIG;
try {
if (!isset($CONFIG['globalcache']) || !isset($CONFIG['globalcache']['CACHE'])) {
return $default;
}
switch ($CONFIG['globalcache']['CACHE']) {
case globalcache_CACHE_OFF:
return $default;
break;
case globalcache_CACHE_APC:
$ret = apc_fetch($GLOBALS["globalcache_key_prefix"] . $key, $success);
return $success ? $ret : $default;
break;
case globalcache_CACHE_ZEND:
$ret = $GLOBALS["zend_cache_object"]->load(globalcache_cleanupkey($GLOBALS["globalcache_key_prefix"] . $key));
return $ret === false ? $default : $ret;
break;
case globalcache_CACHE_EACCELERATOR:
$ret = eaccelerator_get($GLOBALS["globalcache_key_prefix"] . md5($key));
return is_null($ret) ? $default : $ret;
break;
case globalcache_CACHE_MEMCACHE:
$ret = $GLOBALS["memcache_object"]->get($GLOBALS["globalcache_key_prefix"] . md5($key));
return $ret === false ? $default : $ret;
break;
case globalcache_CACHE_DB:
$ds = model_datasource($CONFIG['globalcache']['datasource']);
try {
$ret = $ds->ExecuteScalar("SELECT cvalue FROM wdf_cache WHERE ckey=? AND (valid_until IS NULL OR valid_until>=" . $ds->Driver->Now() . ")", array(md5($key)));
} catch (Exception $ex) {
return $default;
}
if ($ret === false) {
return $default;
}
return session_unserialize($ret);
break;
}
} catch (Exception $ex) {
WdfException::Log($ex);
die($ex->__toString());
}
return $ret;
}
/**
* Returns a value from the wdf cache.
*
* There are multiple caches: SESSION and global.
* Global cache required additional globalcache module to be loaded.
* Will only consult globalcache if `$use_global_cache` is true and `$use_session_cache` is false or
* the object is not found in the SESSION cache
* @param string $key Identifies what you want
* @param mixed $default The default value you want if key is not present in the cache
* @param bool $use_global_cache If true checks the global cache too (see globalcache module)
* @param bool $use_session_cache If true checks the SESSION cache (that one is before the global cache)
* @return mixed The value if found, else the default value
*/
function cache_get($key, $default = false, $use_global_cache = true, $use_session_cache = true)
{
if ($use_session_cache && isset($_SESSION["system_internal_cache"][$key])) {
return session_unserialize($_SESSION["system_internal_cache"][$key]);
}
if ($use_global_cache && system_is_module_loaded('globalcache')) {
$res = globalcache_get($key, $default);
if ($use_session_cache && $res !== $default) {
$_SESSION["system_internal_cache"][$key] = session_serialize($res);
}
return $res;
}
return $default;
}
