/**
  * 导入配置文件
  */
 public function loadConfig()
 {
     $config_preload = array('db', 'global', 'path', 'secure', 'private', 'log', 'soap');
     $config_path = "./config/";
     foreach ($config_preload as $val) {
         $configFile = $config_path . $val . ".php";
         if (file_exists($configFile)) {
             registry::setRegistry($val, include $configFile);
         }
     }
 }