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<?php
## Copyright (c) 2011 Elmar Ludwig, University of Osnabrueck
##
## PHPLIB Data Storage Container using Stud.IP cache
## for use with Stud.IP and cache only!
class CT_Cache
{
protected const CACHE_KEY_PREFIX = 'session_data';
protected const SESSION_LIFETIME = 7200;
private $cache;
public function ac_start()
{
$this->cache = StudipCacheFactory::getCache();
}
public function ac_get_lock()
{
}
public function ac_release_lock()
{
}
public function ac_newid($str, $name = null)
{
return $this->ac_get_value($str) === false ? $str : false;
}
public function ac_store($id, $name, $str)
{
$cache_key = self::CACHE_KEY_PREFIX . '/' . $id;
return $this->cache->write($cache_key, $str, ini_get('session.gc_maxlifetime') ?: self::SESSION_LIFETIME);
}
public function ac_delete($id, $name = null)
{
$cache_key = self::CACHE_KEY_PREFIX . '/' . $id;
$this->cache->expire($cache_key);
}
public function ac_gc($gc_time, $name = null)
{
}
public function ac_halt($s)
{
echo "<b>$s</b>";
exit;
}
public function ac_get_value($id, $name = null)
{
$cache_key = self::CACHE_KEY_PREFIX . '/' . $id;
return $this->cache->read($cache_key);
}
public function ac_get_changed($id, $name = null)
{
}
public function ac_set_changed($id, $name, $timestamp)
{
}
}
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