不要在标题中设置字符集

Question

How can I avoid, that PHP (or apache) automatically adds a charset=utf-8 to the Content-type eader when sending the content type?

(Reason is that this is causing issues with Internet Explorer)

orange public$ cat test.php 
<?php

header('Content-Type: text/xml');
orange public$ curl -v example.com.orange.me.local/test.php
#*   Trying 10.0.0.1...
* Connected to example.com.orange.me.local (10.0.0.1) port 80 (#0)
> GET /test.php HTTP/1.1
> Host: example.com.orange.imi.local
> User-Agent: curl/7.47.0
> Accept: */*
> 
< HTTP/1.1 200 OK
< Date: Wed, 01 Jun 2016 16:24:49 GMT
< Server: Apache/2.4.18 (Ubuntu)
< Content-Length: 0
< Content-Type: text/xml;charset=UTF-8
< 
* Connection #0 to host example.com.orange.me.local left intact

Answer 1

I was able to remove the charset using

ini_set('default_charset', '');

in my script and

AddDefaultCharset off

in my .htaccess