116 lines
3.4 KiB
PHP
116 lines
3.4 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: table_common_syscache.php 31119 2012-07-18 04:21:20Z zhangguosheng $
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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 table_common_syscache extends discuz_table
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{
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private $_isfilecache;
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public function __construct() {
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$this->_table = 'common_syscache';
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$this->_pk = 'cname';
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$this->_pre_cache_key = '';
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$this->_isfilecache = getglobal('config/cache/type') == 'file';
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$this->_allowmem = memory('check');
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parent::__construct();
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}
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public function fetch($cachename) {
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$data = $this->fetch_all(array($cachename));
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return isset($data[$cachename]) ? $data[$cachename] : false;
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}
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public function fetch_all($cachenames) {
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$data = array();
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$cachenames = is_array($cachenames) ? $cachenames : array($cachenames);
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if($this->_allowmem) {
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$data = memory('get', $cachenames);
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$newarray = $data !== false ? array_diff($cachenames, array_keys($data)) : $cachenames;
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if(empty($newarray)) {
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return $data;
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} else {
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$cachenames = $newarray;
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}
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}
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if($this->_isfilecache) {
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$lostcaches = array();
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foreach($cachenames as $cachename) {
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if(!@include_once(DISCUZ_ROOT.'./data/cache/cache_'.$cachename.'.php')) {
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$lostcaches[] = $cachename;
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} elseif($this->_allowmem) {
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memory('set', $cachename, $data[$cachename]);
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}
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}
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if(!$lostcaches) {
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return $data;
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}
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$cachenames = $lostcaches;
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unset($lostcaches);
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}
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$query = DB::query('SELECT * FROM '.DB::table($this->_table).' WHERE '.DB::field('cname', $cachenames));
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while($syscache = DB::fetch($query)) {
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$data[$syscache['cname']] = $syscache['ctype'] ? unserialize($syscache['data']) : $syscache['data'];
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$this->_allowmem && (memory('set', $syscache['cname'], $data[$syscache['cname']]));
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if($this->_isfilecache) {
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$cachedata = '$data[\''.$syscache['cname'].'\'] = '.var_export($data[$syscache['cname']], true).";\n\n";
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if(($fp = @fopen(DISCUZ_ROOT.'./data/cache/cache_'.$syscache['cname'].'.php', 'wb'))) {
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fwrite($fp, "<?php\n//Discuz! cache file, DO NOT modify me!\n//Identify: ".md5($syscache['cname'].$cachedata.getglobal('config/security/authkey'))."\n\n$cachedata?>");
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fclose($fp);
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}
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}
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}
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foreach($cachenames as $name) {
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if($data[$name] === null) {
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$data[$name] = null;
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$this->_allowmem && (memory('set', $name, array()));
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}
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}
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return $data;
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}
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public function insert($cachename, $data) {
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parent::insert(array(
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'cname' => $cachename,
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'ctype' => is_array($data) ? 1 : 0,
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'dateline' => TIMESTAMP,
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'data' => is_array($data) ? serialize($data) : $data,
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), false, true);
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if($this->_allowmem && memory('get', $cachename) !== false) {
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memory('set', $cachename, $data);
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}
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$this->_isfilecache && @unlink(DISCUZ_ROOT.'./data/cache/cache_'.$cachename.'.php');
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}
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public function update($cachename, $data) {
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$this->insert($cachename, $data);
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}
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public function delete($cachenames) {
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parent::delete($cachenames);
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if($this->_allowmem || $this->_isfilecache) {
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foreach((array)$cachenames as $cachename) {
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$this->_allowmem && memory('rm', $cachename);
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$this->_isfilecache && @unlink(DISCUZ_ROOT.'./data/cache/cache_'.$cachename.'.php');
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}
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}
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}
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}
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?>
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