phpcms缓存文件函数分析

$this->categorys = getcache(‘category_content_’.$this->siteid,’commons’);

/**
* 写入缓存，默认为文件缓存，不加载缓存配置。
* @param $name 缓存名称
* @param $data 缓存数据
* @param $filepath 数据路径（模块名称） caches/cache_$filepath/
* @param $type 缓存类型[file,memcache,apc]
* @param $config 配置名称
* @param $timeout 过期时间
*/
function setcache($name, $data, $filepath='', $type='file', $config='', $timeout=0) {
pc_base::load_sys_class('cache_factory','',0);
if($config) {
$cacheconfig = pc_base::load_config('cache');
$cache = cache_factory::get_instance($cacheconfig)->get_cache($config);
} else {
$cache = cache_factory::get_instance()->get_cache($type);
}
return $cache->set($name, $data, $timeout, '', $filepath);
}

$infos = $this->db->select();
foreach ($infos as $info){
$servers[$info['id']] = $info;
}
setcache('downservers', $servers,'commons');

$downservers = getcache(‘downservers’,’commons’)