/usr/share/php/Horde/Cache/Storage/Xcache.php is in php-horde-cache 2.5.2-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Copyright 2006-2016 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2006-2016 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Cache
*/
/**
* Cache storage in Xcache.
*
* @author Duck <duck@obala.net>
* @category Horde
* @copyright 2006-2016 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Cache
*/
class Horde_Cache_Storage_Xcache extends Horde_Cache_Storage_Base
{
/**
* Constructor.
*
* @param array $params Optional parameters:
* <pre>
* - prefix: (string) The prefix to use for the cache keys.
* DEFAULT: ''
* </pre>
*/
public function __construct(array $params = array())
{
parent::__construct(array_merge(array(
'prefix' => '',
), $params));
}
/**
*/
public function get($key, $lifetime = 0)
{
$key = $this->_params['prefix'] . $key;
$this->_setExpire($key, $lifetime);
$result = xcache_get($key);
return empty($result)
? false
: $result;
}
/**
*/
public function set($key, $data, $lifetime = 0)
{
$key = $this->_params['prefix'] . $key;
if (xcache_set($key . '_expire', time(), $lifetime)) {
xcache_set($key, $data, $lifetime);
}
}
/**
*/
public function exists($key, $lifetime = 0)
{
$key = $this->_params['prefix'] . $key;
$this->_setExpire($key, $lifetime);
return xcache_isset($key);
}
/**
*/
public function expire($key)
{
$key = $this->_params['prefix'] . $key;
xcache_unset($key . '_expire');
return xcache_unset($key);
}
/**
*/
public function clear()
{
// xcache_clear_cache() won't work because it requires HTTP Auth.
throw new Horde_Cache_Exception('Not supported');
}
/**
* Set expire time on each call since xcache sets it on cache creation.
*
* @param string $key Cache key to expire.
* @param integer $lifetime Lifetime of the data in seconds.
*/
protected function _setExpire($key, $lifetime)
{
if ($lifetime == 0) {
// don't expire
return;
}
$expire = xcache_get($key . '_expire');
// set prune period
if ($expire + $lifetime < time()) {
// Expired
xcache_unset($key . '_expire');
xcache_unset($key);
}
}
}
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