Core_Config::clear_cache

public function clear_cache($type = '')
{
    if (!$this->is_use_cache)
    {
        // 非普通文件写入，不缓存，无需清理
        return true;
    }

    $projects = array_keys((array)Core::config('core.projects'));
    if ($projects)foreach ($projects as $project)
    {
        # 所有项目的配置文件
        $tmpfile[] = $this->get_config_cache_file($project, $type);
    }

    $rs = File::unlink($tmpfile);

    if (IS_DEBUG)Core::debug()->log('clear extends config cache '. ($rs?'success':'fail') .'.');

    return $rs;
}