I want to get the domain name for where the script is running. How can that be done with PHP?
I see that $_SERVER['HTTP_HOST'] as well as $_SERVER['SERVER_NAME'] contain this information.
Will that variable always work and should I use one over the other?
Thank you.
Similar question has been asked in stackoverflow before.
See here: PHP $_SERVER['HTTP_HOST'] vs. $_SERVER['SERVER_NAME'], am I understanding the man pages correctly?
Also see this article: http://shiflett.org/blog/2006/mar/server-name-versus-http-host
Recommended using HTTP_HOST, and falling back on SERVER_NAME only if HTTP_HOST was not set. He said that SERVER_NAME could be unreliable on the server for a variety of reasons, including:
- no DNS support
- misconfigured
- behind load balancing software