Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
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memcache.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\cache\driver;
015
016 if (!defined('PHPBB_ACM_MEMCACHE_PORT'))
017 {
018 define('PHPBB_ACM_MEMCACHE_PORT', 11211);
019 }
020
021 if (!defined('PHPBB_ACM_MEMCACHE_COMPRESS'))
022 {
023 define('PHPBB_ACM_MEMCACHE_COMPRESS', false);
024 }
025
026 if (!defined('PHPBB_ACM_MEMCACHE_HOST'))
027 {
028 define('PHPBB_ACM_MEMCACHE_HOST', 'localhost');
029 }
030
031 if (!defined('PHPBB_ACM_MEMCACHE'))
032 {
033 //can define multiple servers with host1/port1,host2/port2 format
034 define('PHPBB_ACM_MEMCACHE', PHPBB_ACM_MEMCACHE_HOST . '/' . PHPBB_ACM_MEMCACHE_PORT);
035 }
036
037 /**
038 * ACM for Memcached
039 */
040 class memcache extends \phpbb\cache\driver\memory
041 {
042 var $extension = 'memcache';
043
044 var $memcache;
045 var $flags = 0;
046
047 function __construct()
048 {
049 // Call the parent constructor
050 parent::__construct();
051
052 $this->memcache = new \Memcache;
053 foreach(explode(',', PHPBB_ACM_MEMCACHE) as $u)
054 {
055 $parts = explode('/', $u);
056 $this->memcache->addServer(trim($parts[0]), trim($parts[1]));
057 }
058 $this->flags = (PHPBB_ACM_MEMCACHE_COMPRESS) ? MEMCACHE_COMPRESSED : 0;
059 }
060
061 /**
062 * {@inheritDoc}
063 */
064 function unload()
065 {
066 parent::unload();
067
068 $this->memcache->close();
069 }
070
071 /**
072 * {@inheritDoc}
073 */
074 function purge()
075 {
076 $this->memcache->flush();
077
078 parent::purge();
079 }
080
081 /**
082 * Fetch an item from the cache
083 *
084 * @access protected
085 * @param string $var Cache key
086 * @return mixed Cached data
087 */
088 function _read($var)
089 {
090 return $this->memcache->get($this->key_prefix . $var);
091 }
092
093 /**
094 * Store data in the cache
095 *
096 * @access protected
097 * @param string $var Cache key
098 * @param mixed $data Data to store
099 * @param int $ttl Time-to-live of cached data
100 * @return bool True if the operation succeeded
101 */
102 function _write($var, $data, $ttl = 2592000)
103 {
104 if (!$this->memcache->replace($this->key_prefix . $var, $data, $this->flags, $ttl))
105 {
106 return $this->memcache->set($this->key_prefix . $var, $data, $this->flags, $ttl);
107 }
108 return true;
109 }
110
111 /**
112 * Remove an item from the cache
113 *
114 * @access protected
115 * @param string $var Cache key
116 * @return bool True if the operation succeeded
117 */
118 function _delete($var)
119 {
120 return $this->memcache->delete($this->key_prefix . $var);
121 }
122 }
123