跨浏览器下PHP下载文件名中的中文乱码问题的解决方法，有需要的朋友可以看看。
<?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：
<?php
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 ");
}
?>