彻底解决跨浏览器下PHP下载文件名中的中文乱码问题

<?php$ua = $_SERVER["HTTP_USER_AGENT"];$filename = "中文 文件名.txt";
$encoded_filename = urlencode($filename);
$encoded_filename = str_replace("+", "%20", $encoded_filename);header('Content-Type: application/octet-stream');if (preg_match("/MSIE/", $ua)) {header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');
} else if (preg_match("/Firefox/", $ua)) {header('Content-Disposition: attachment; filename*="utf8\'\'' . $filename . '"');
} else {header('Content-Disposition: attachment; filename="' . $filename . '"');
}print 'ABC';
?>

上面是一个比较通用的解决方案（据说xp+IE7会有问题，未验证）。

这个问题是在使用CI-Excel-Generation-Library时遇到的，解决办法如下：

  private function set_headers() {$ua = $_SERVER["HTTP_USER_AGENT"];$filename = $this->filename . ".xls";$encoded_filename = urlencode($filename);$encoded_filename = str_replace("+", "%20", $encoded_filename);     header("Pragma: public");header("Expires: 0");header("Cache-Control: must-revalidate, post-check=0, pre-check=0");header("Content-Type: application/force-download");header("Content-Type: application/octet-stream");//header("Content-Type: application/vnd.ms-excel;charset=UTF-8");header("Content-Type: application/download");;if (preg_match("/MSIE/", $ua)) {  header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');} else if (preg_match("/Firefox/", $ua)) {  header('Content-Disposition: attachment; filename*="utf8\'\'' . $filename . '"');} else {  header('Content-Disposition: attachment; filename="' . $filename . '"');}header("Content-Transfer-Encoding: binary ");}