protected function _get_adv_data(&$value)
{
if (substr($value, 0, 18) == '__::foRMat_CacHe::' && preg_match('#^__::foRMat_CacHe::Type=(?P<type>[a-z0-9_]+),ExpKey=(?P<expkey>[a-f0-9]{32}),Exp=(?P<exp>[0-9,~/]+),SaveTime=(?P<savetime>[0-9]+),Value=(?P<value>.*)$#', $value, $match)) {
#200~250,1/100
if (!preg_match('#^([0-9]+)~([0-9]+),([0-9]+)/([0-9]+)$#', $match['exp'], $match_exp)) {
return true;
}
switch ($match['type']) {
case Cache::TYPE_ADV_HIT:
case Cache::TYPE_MAX_HIT:
# 获取命中统计数
$exp = $this->driver->get($match['expkey']);
break;
case Cache::TYPE_ADV_AGE:
case Cache::TYPE_MAX_AGE:
default:
$exp = TIME - $match['savetime'];
break;
}
if ($exp >= $match_exp[0] && $exp <= $match_exp[1]) {
# 在指定范围内按比例更新
$rand = mt_rand(1, $match_exp[3]);
if ($rand <= $match_exp[2]) {
# 命中，则清除数据，让程序可主动更新
$value = null;
return null;
}
} elseif ($exp > $match_exp[1]) {
# 强制认为没有获取数据
$value = null;
return null;
}
if ($match['type'] == Cache::TYPE_ADV_HIT || $match['type'] == Cache::TYPE_MAX_HIT) {
# 计数器增加
$this->driver->increment($match['expkey'], 1, $match_exp[1]);
}
$value = @unserialize($match['value']);
}
return null;
}
/**
* 关闭所有memcache链接
*/
public static function close_all_connect()
{
if (!Cache_Driver_Memcache::$_memcached_mode) {
foreach (Cache_Driver_Memcache::$memcaches as $config_name => $memcache) {
try {
$memcache->close();
} catch (Exception $e) {
Core::debug()->error('close memcache connect error:' . $e);
}
Cache_Driver_Memcache::$memcaches[$config_name] = null;
}
}
# 重置全部数据
Cache_Driver_Memcache::$memcaches = array();
Cache_Driver_Memcache::$memcaches_num = array();
if (IS_DEBUG) {
Core::debug()->info('close all memcache server.');
}
}
