I have getting variable results from the
$_SERVER['HTTP_HOST'] variable in the
functions.php file of our child theme.
We are running WordPress 3.5.2 on NGINX with PageLines 2.4 as our parent theme and a handful of plugins that I can detail if necessary. Our virtual host is set to answer to:
As we have several private label subdomains that will change the branding of the site.
www.salesgenie.com will be the generic domain but
att.salesgenie.com is an example of a branded subdomain.
I need to be able to detect the subdomain the client calls with which I am trying to get with
$_SERVER['HTTP_HOST']. The issue is that
$_SERVER['HTTP_HOST'] is accurate the first time a client comes to their domain but reverts to the
$_SERVER['SERVER_NAME'] value after that either on page reload or navigation to any other page. Any ideas why this might happen or how to work around it?
To test this I've got a function logging the
$_SERVER['HTTP_HOST'] to a cookie called CMSCookie and you can test it by going to
[cms.salesgenie.com] (the CNAME is working) and both variables will read
cms.salesgenie.com. But if you modify your host file to point
126.96.36.199 then you can test
att.salesgenie.com and the cookie will be correct the first time you hit a page, but if you reload, both server name and host will be