private function write2File($data)
 {/*{{{*/
     if(false == empty($data))
     {
         $xmlData = XString::array2XML($data, $this->charset);
         $filePath = $this->workPath.$this->nowFile.'.'.self::SUFFIX_XML;
         file_put_contents($filePath, $xmlData);
         $this->nowFile += 1;
         unset($xmlData);
     }
     else
     {
         $this->myEcho("   没东西可写...\n");
     }
 }/*}}}*/