Viewing file: trifile.php (4.65 KB) -rw-rw-rw- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
<?php // +----------------------------------------------------------------------+ // | PEAR :: Cache | // +----------------------------------------------------------------------+ // | Copyright (c) 1997-2004 The PHP Group | // +----------------------------------------------------------------------+ // | This source file is subject to version 2.0 of the PHP license, | // | that is bundled with this package in the file LICENSE, and is | // | available at through the world-wide-web at | // | http://www.php.net/license/2_02.txt. | // | If you did not receive a copy of the PHP license and are unable to | // | obtain it through the world-wide-web, please send a note to | // | license@php.net so we can mail you a copy immediately. | // +----------------------------------------------------------------------+ // | Authors: Ulf Wendel <ulf.wendel@phpdoc.de> | // | Sebastian Bergmann <sb@sebastian-bergmann.de> | // | Ian Eure <ieure@php.net> | // +----------------------------------------------------------------------+ // // $Id: trifile.php,v 1.1 2004/04/01 07:50:07 chregu Exp $
require_once 'Cache/Container/file.php';
/** * Tri-file cache. * * This cache container stores files with no special encoding to reduce overhead. * Expiration & user data are stored in seperate files, prefixed with a '.' and * suffixed with '.exp' & '.dat' respectively. * * See http://atomized.org/PEAR/Cache_trifile.html for more information. * * @author Ian Eure <ieure@php.net> * @version 1.0 */ class Cache_Container_trifile extends Cache_Container_file { /** * Fetch cached file. * * @param string $id Cache ID to fetch * @param string $group Group to fetch from * @return array 1-dimensional array in the format: expiration,data,userdata */ function fetch($id, $group) { $file = $this->getFilename($id, $group); if (!file_exists($file)) return array(NULL, NULL, NULL); return array( file_get_contents($this->_getExpFile($file)), file_get_contents($file), file_get_contents($this->_getUDFile($file)) ); } /** * Get the file to store cache data in. * * @return string Cache data file name * @access private */ function _getFile($file) { $dir = dirname($file); $file = basename($file); return $dir.'/.'.$file; } /** * Get the file to store expiration data in. * * @return string Expiration data file name * @access private */ function _getExpFile($file) { return $this->_getFile($file).'.exp'; } /** * Get the file to store user data in. * * @return string User data file name * @access private */ function _getUDFile($file) { return $this->_getFile($file).'.dat'; } /** * Cache file * * @param string $id Cache ID * @param mixed $cachedata Data to cache * @param mixed $expires When the data expires * @param string $group Cache group to store data in * @param mixed $userdata Additional data to store * @return boolean true on success, false otherwise */ function save($id, $cachedata, $expires, $group, $userdata) { $this->flushPreload($id, $group);
$file = $this->getFilename($id, $group); if (PEAR::isError($res = $this->_saveData($file, $cachedata))) { return $res; } if (PEAR::isError($res = $this->_saveData($this->_getExpFile($file), $expires))) { return $res; } if(PEAR::isError($res = $this->_saveData($this->_getUDFile($file), $userData))) { return $res; }
return true; }
/** * Save data in a file * * @param string $file File to save data in * @param string $data Data to save * @return mixed true on success, Cache_Error otherwise */ function _saveData($file, $data) { // Save data if (!($fh = @fopen($file, 'wb'))) return new Cache_Error("Can't access '$file' to store cache data. Check access rights and path.", __FILE__, __LINE__); if ($this->fileLocking) { flock($fh, LOCK_EX); } fwrite($fh, $data); if($this->fileLocking) { flock($fh, LOCK_UN); } fclose($fh); return true; } }
?>
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