174 lines
3.8 KiB
PHP
174 lines
3.8 KiB
PHP
<?php
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/*
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* Copyright (c) 2010-2013 Tinyboard Development Group
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*/
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defined('TINYBOARD') or exit;
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class Cache {
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private static $cache;
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public static function init() {
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global $config;
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switch ($config['cache']['enabled']) {
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case 'memcached':
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self::$cache = new Memcached();
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self::$cache->addServers($config['cache']['memcached']);
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break;
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case 'redis':
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self::$cache = new Redis();
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self::$cache->connect($config['cache']['redis'][0], $config['cache']['redis'][1]);
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if ($config['cache']['redis'][2]) {
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self::$cache->auth($config['cache']['redis'][2]);
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}
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self::$cache->select($config['cache']['redis'][3]) or die('cache select failure');
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break;
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case 'php':
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self::$cache = array();
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break;
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}
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}
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public static function get($key) {
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global $config, $debug;
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$key = $config['cache']['prefix'] . $key;
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$data = false;
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switch ($config['cache']['enabled']) {
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case 'memcached':
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if (!self::$cache)
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self::init();
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$data = self::$cache->get($key);
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break;
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case 'apc':
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$data = apc_fetch($key);
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break;
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case 'xcache':
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$data = xcache_get($key);
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break;
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case 'php':
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$data = isset(self::$cache[$key]) ? self::$cache[$key] : false;
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break;
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case 'fs':
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$key = str_replace('/', '::', $key);
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$key = str_replace("\0", '', $key);
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if (!file_exists('tmp/cache/'.$key)) {
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$data = false;
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}
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else {
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$data = file_get_contents('tmp/cache/'.$key);
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$data = json_decode($data, true);
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}
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break;
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case 'redis':
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if (!self::$cache)
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self::init();
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$data = json_decode(self::$cache->get($key), true);
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break;
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}
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if ($config['debug'])
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$debug['cached'][] = $key . ($data === false ? ' (miss)' : ' (hit)');
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return $data;
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}
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public static function set($key, $value, $expires = false) {
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global $config, $debug;
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$key = $config['cache']['prefix'] . $key;
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if (!$expires)
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$expires = $config['cache']['timeout'];
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switch ($config['cache']['enabled']) {
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case 'memcached':
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if (!self::$cache)
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self::init();
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self::$cache->set($key, $value, $expires);
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break;
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case 'redis':
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if (!self::$cache)
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self::init();
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self::$cache->setex($key, $expires, json_encode($value));
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break;
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case 'apc':
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apc_store($key, $value, $expires);
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break;
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case 'xcache':
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xcache_set($key, $value, $expires);
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break;
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case 'fs':
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$key = str_replace('/', '::', $key);
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$key = str_replace("\0", '', $key);
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file_put_contents('tmp/cache/'.$key, json_encode($value));
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break;
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case 'php':
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self::$cache[$key] = $value;
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break;
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}
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if ($config['debug'])
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$debug['cached'][] = $key . ' (set)';
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}
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public static function delete($key) {
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global $config, $debug;
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$key = $config['cache']['prefix'] . $key;
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switch ($config['cache']['enabled']) {
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case 'memcached':
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case 'redis':
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if (!self::$cache)
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self::init();
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self::$cache->delete($key);
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break;
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case 'apc':
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apc_delete($key);
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break;
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case 'xcache':
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xcache_unset($key);
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break;
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case 'fs':
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$key = str_replace('/', '::', $key);
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$key = str_replace("\0", '', $key);
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@unlink('tmp/cache/'.$key);
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break;
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case 'php':
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unset(self::$cache[$key]);
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break;
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}
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if ($config['debug'])
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$debug['cached'][] = $key . ' (deleted)';
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}
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public static function flush() {
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global $config;
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switch ($config['cache']['enabled']) {
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case 'memcached':
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if (!self::$cache)
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self::init();
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return self::$cache->flush();
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case 'apc':
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return apc_clear_cache('user');
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case 'php':
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self::$cache = array();
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break;
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case 'fs':
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$files = glob('tmp/cache/*');
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foreach ($files as $file) {
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unlink($file);
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}
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break;
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case 'redis':
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if (!self::$cache)
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self::init();
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return self::$cache->flushDB();
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}
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return false;
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}
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}
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