PHP生成 excl、word文件

$time = time(); 
  $filename = date("Y年m月d日h点m分s秒", $time).‘问卷数据‘;
  $rows =  Sp_Looks_Vote::downvote();
  $file = $filename.".csv";
  header(‘Content-Description: File Transfer‘);
  header(‘Content-Type: application/octet-stream‘);  
  header(‘Content-Disposition: attachment; filename=‘.basename($file));
  header(‘Content-Transfer-Encoding: binary‘);
  header(‘Expires: 0‘);
  header(‘Cache-Control: must-revalidate, post-check=0, pre-check=0‘);
  header(‘Pragma: public‘);

$tabletitle .= "购买地址,常常购买,喜欢模特,内容如何,印象如何,是否购买,感觉如何,购买方式,购买方式建议,吸引点,改进建议";

   $conter = iconv(‘utf-8‘,‘gbk‘,$tabletitle)."\n";

echo $conter;die;