83 lines
2.1 KiB
PHP
83 lines
2.1 KiB
PHP
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<?php
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/**
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* [Discuz!] (C)2001-2099 Comsenz Inc.
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* This is NOT a freeware, use is subject to license terms
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*
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* $Id: cache_file.php 6757 2010-03-25 09:01:29Z cnteacher $
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*/
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if(!defined('IN_DISCUZ')) {
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exit('Access Denied');
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}
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class ultrax_cache {
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function ultrax_cache($conf) {
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$this->conf = $conf;
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}
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function get_cache($key) {
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if($this->cache_exists($key)) {
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$data = $this->_get_cache($key);
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return $data['data'];
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}
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return false;
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}
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function set_cache($key, $value, $life) {
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global $_G;
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$data = array($key => array('data' => $value, 'life' => $life));
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require_once libfile('function/cache');
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$cache_file = $this->get_cache_file_path($key);
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dmkdir(dirname($cache_file));
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$cachedata = "\$data = ".arrayeval($data).";\n";
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if($fp = @fopen($cache_file, 'wb')) {
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fwrite($fp, "<?php\n//Discuz! cache file, DO NOT modify me!".
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"\n//Created: ".date("M j, Y, G:i").
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"\n//Identify: ".md5($cache_file.$cachedata.$_G['config']['security']['authkey'])."\n\nif(!defined('IN_DISCUZ')) {\n\texit('Access Denied');\n}\n\n$cachedata?>");
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fclose($fp);
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} else {
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exit('Can not write to cache files, please check directory ./data/ and ./data/ultraxcache/ .');
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}
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return true;
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}
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function del_cache($key) {
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$cache_file = $this->get_cache_file_path($key);
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if(file_exists($cache_file)) {
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return @unlink($cache_file);
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}
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return true;
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}
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function _get_cache($key) {
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static $data = null;
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if(!isset($data[$key])) {
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include $this->get_cache_file_path($key);
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}
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return $data[$key];
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}
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function cache_exists($key) {
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$cache_file = $this->get_cache_file_path($key);
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if(!file_exists($cache_file)) {
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return false;
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}
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$data = $this->_get_cache($key);
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if($data['life'] && (filemtime($cache_file) < time() - $data['life'])) {
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return false;
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}
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return true;
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}
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function get_cache_file_path($key) {
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static $cache_path = null;
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if(!isset($cache_path[$key])) {
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$dir = hexdec($key{0}.$key{1}.$key{2}) % 1000;
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$cache_path[$key] = $this->conf['path'].'/'.$dir.'/'.$key.'.php';
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}
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return $cache_path[$key];
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}
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}
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