Wrong domain with $_SERVER[HTTP_HOST]?

Question

I tried to set up an htaccess file, which simply redirects all urls which are unlike one to another url:

RewriteCond %{HTTP_HOST} !^www.example.com[NC] 
RewriteRule ^(.*)$ http://www.example.com/$1 [R=301,L]

But i recognized something strange, for some reason it results in an endless loop. So i did some tests.

My Webspace looks like this:

 -root 
 ---folder 1 
 ---folder 2

And i have 2 Domains, one is targeting the root-folder and the other one is targeting a subfolder:

-root <--- http://another-url.com
--- folder 1
--- folder 2 <---- http://www.example.com

I asume that %{HTTP_HOST} from my htaccess file is recognizing every url as the http://another-url.de, which is unlike my www.example.com and so it redirects to www.example.com which of cause results in an endless loop.

I did a simple check: I created a PHP File in my folder 2 which prints the $_SERVER[HTTP_HOST]. Opend the file through http://www.example.com and i got the output www.another-url.com.

Does anyone know whats going on? And how i could solve this?!

Answer 1

I know this is an old question, but I had the same issue today in Google Chrome, on a local environment that hosts many fake development domains. Here's what fixed it for me:

• Open the developer tools (Ctrl-Alt-i on PC, Cmd-Option-i on Mac)
• Press and hold the refresh button
• When the options appear, choose Empty Cache and Hard Reload

After that, the correct domain loaded. So Chrome must have had a bad DNS entry cached or something.