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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | <?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 ***** */ /** * APC based cache. * * You need APC installed on your server for this cache system to * work. You can install APC with <code>$ sudo pecl install apc</code> * on most systems. * * A special 'cache_apc_keyprefix' can be set to use APC for different * applications and avoid conflict. Compression is performed at the * PHP level using the gz(in|de)flate functions. * * Example of configuration: * * <pre> * $cfg['cache_engine'] = 'Pluf_Cache_Apc'; * $cfg['cache_timeout'] = 300; * $cfg['cache_apc_keyprefix'] = 'uniqueforapp'; * $cfg['cache_apc_compress'] = true; * </pre> * * @see Pluf_Cache * @see http://www.php.net/gzdeflate * @see http://www.php.net/gzinflate */ class Pluf_Cache_Apc extends Pluf_Cache { /** * Prefix added to all the keys. */ private $keyprefix = '' ; /** * Auto compress the data to save memory against a small * performance loss. */ private $compress = false; /** * Create the cache object and initialize it from the * configuration. */ public function __construct() { $this ->keyprefix = Pluf::f( 'cache_apc_keyprefix' , '' ); $this ->compress = Pluf::f( 'cache_apc_compress' , false); } /** * 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 ( $timeout == null) $timeout = Pluf::f( 'cache_timeout' , 300); $value = serialize( $value ); if ( $this ->compress) $value = gzdeflate( $value , 9); return apc_store( $this ->keyprefix. $key , $value , $timeout ); } /** * Get value from the cache. * * @param string Key to get the information * @param mixed Default value to return if cache miss (null) * @return mixed Stored value or default */ public function get( $key , $default =null) { $success = false; $value = apc_fetch( $this ->keyprefix. $key , & $success ); if (! $success ) return $default ; if ( $this ->compress) $value = gzinflate( $value ); return unserialize( $value ); } } |