cache.memcache.func.php
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<?php
/**
* [WeEngine System] Copyright (c) 2014 WE7.CC
* WeEngine is NOT a free software, it under the license terms, visited http://www.we7.cc/ for more details.
*/
defined('IN_IA') or exit('Access Denied');
function cache_memcache() {
global $_W;
static $memcacheobj;
if (!extension_loaded('memcache')) {
return error(1, 'Class Memcache is not found');
}
if (empty($memcacheobj)) {
$config = $_W['config']['setting']['memcache'];
$memcacheobj = new Memcache();
if($config['pconnect']) {
$connect = $memcacheobj->pconnect($config['server'], $config['port']);
} else {
$connect = $memcacheobj->connect($config['server'], $config['port']);
}
if(!$connect) {
return error(-1, 'Memcache is not in work');
}
}
return $memcacheobj;
}
function cache_read($key, $forcecache = true) {
$key = cache_namespace($key);
$memcache = cache_memcache();
if (is_error($memcache)) {
return $memcache;
}
$result = $memcache->get(cache_prefix($key));
if (empty($result) && empty($forcecache)) {
$dbcache = pdo_get('core_cache', array('key' => $key), array('value'));
if (!empty($dbcache['value'])) {
$result = iunserializer($dbcache['value']);
$memcache->set(cache_prefix($key), $result);
}
}
return $result;
}
function cache_search($key) {
return cache_read(cache_prefix($key));
}
function cache_write($key, $value, $ttl = 0, $forcecache = true) {
$key = cache_namespace($key);
$memcache = cache_memcache();
if (is_error($memcache)) {
return $memcache;
}
if (empty($forcecache)) {
$record = array();
$record['key'] = $key;
$record['value'] = iserializer($value);
pdo_insert('core_cache', $record, true);
}
if ($memcache->set(cache_prefix($key), $value, MEMCACHE_COMPRESSED, $ttl)) {
return true;
} else {
return false;
}
}
function cache_delete($key, $forcecache = true) {
$origins_cache_key = $key;
$key = cache_namespace($key);
$memcache = cache_memcache();
if (is_error($memcache)) {
return $memcache;
}
if (empty($forcecache)) {
pdo_delete('core_cache', array('key' => $key));
}
if ($memcache->delete(cache_prefix($key))) {
unset($GLOBALS['_W']['cache'][$origins_cache_key]);
return true;
} else {
unset($GLOBALS['_W']['cache'][$origins_cache_key]);
return false;
}
}
function cache_clean($prefix = '') {
if (!empty($prefix)) {
$cache_namespace = cache_namespace($prefix, true);
unset($GLOBALS['_W']['cache']);
pdo_delete('core_cache', array('key LIKE' => $cache_namespace . '%'));
return true;
}
$memcache = cache_memcache();
if (is_error($memcache)) {
return $memcache;
}
if ($memcache->flush()) {
unset($GLOBALS['_W']['cache']);
pdo_delete('core_cache');
return true;
} else {
return false;
}
}
function cache_namespace($key, $forcenew = false) {
if (!strexists($key, ':')) {
$namespace_cache_key = $key;
} else {
list($key1, $key2) = explode(':', $key);
if ($key1 == 'we7') {
$namespace_cache_key = $key2;
} else {
$namespace_cache_key = $key1;
}
}
if (!in_array($namespace_cache_key, array('unimodules', 'user_modules'))) {
return $key;
}
$namespace_cache_key = 'cachensl:' . $namespace_cache_key;
$memcache = cache_memcache();
if (is_error($memcache)) {
return $memcache;
}
$namespace = $memcache->get(cache_prefix($namespace_cache_key));
if (empty($namespace) || $forcenew) {
$namespace = random(5);
$memcache->set(cache_prefix($namespace_cache_key), $namespace, MEMCACHE_COMPRESSED, 0);
}
return $namespace . ':' . $key;
}
function cache_prefix($key) {
return $GLOBALS['_W']['config']['setting']['authkey'] . $key;
}