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<?php /* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* # ***** BEGIN LICENSE BLOCK ***** # This file is part of Plume Framework, a simple PHP Application Framework. # Copyright (C) 2001-2007 Loic d'Anterroches and contributors. # # Plume Framework is free software; you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License as published by # the Free Software Foundation; either version 2.1 of the License, or # (at your option) any later version. # # Plume Framework is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # # ***** END LICENSE BLOCK ***** */ /** * Memcached based cache. * * A special 'cache_memcached_keyprefix' can be set to use one * memcached for different applications and avoid conflict. * * Example of configuration: * * <pre> * $cfg['cache_engine'] = 'Pluf_Cache_Memcached'; * $cfg['cache_timeout'] = 300; * $cfg['cache_memcached_keyprefix'] = 'uniqueforapp'; * $cfg['cache_memcached_server'] = 'localhost'; * $cfg['cache_memcached_port'] = 11211; * $cfg['cache_memcached_compress'] = 0; (or MEMCACHE_COMPRESSED) * </pre> */ class Pluf_Cache_Memcached extends Pluf_Cache { private $memcache = null; private $keyprefix = '' ; public function __construct() { $this ->memcache = memcache_connect(Pluf::f( 'cache_memcached_server' , 'localhost' ), Pluf::f( 'cache_memcached_port' , 11211)); if (false === $this ->memcache) { $this ->memcache = null; } $this ->keyprefix = Pluf::f( 'cache_memcached_keyprefix' , '' ); } /** * Set a value in the cache. * * @param string Key to store the information * @param mixed Value to store * @param int Timeout in seconds (null) * @return bool Success */ public function set( $key , $value , $timeout =null) { if ( $this ->memcache) { if ( $timeout == null) $timeout = Pluf::f( 'cache_timeout' , 300); $this ->memcache->set( $this ->keyprefix. $key , serialize( $value ), Pluf::f( 'cache_memcached_compress' , 0), $timeout ); } } /** * Get value from the cache. * * @param string Key to get the information * @param mixed Default value to return if cache miss (null) * @param mixed Stored value or default */ public function get( $key , $default =null) { if ( $this ->memcache) { $val = $this ->memcache->get( $this ->keyprefix. $key ); if (false === $val ) { return $default ; } else { return unserialize( $val ); } } else { return $default ; } } } |