Here’s a one line solution: array_shift((explode(‘.’, $_SERVER[‘HTTP_HOST’]))); Or using your example: array_shift((explode(‘.’, ‘en.example.com’))); EDIT: Fixed “only variables should be passed by reference” by adding double parenthesis. EDIT 2: Starting from PHP 5.4 you can simply do: explode(‘.’, ‘en.example.com’)[0];
Anyone have any great ideas besides storing a list of all TLDs? No, because each TLD differs on what counts as a subdomain, second level domain, etc. Keep in mind that there are top level domains, second level domains, and subdomains. Technically speaking, everything except the TLD is a subdomain. In the domain.com.uk example, “domain” … Read more
Most answers given here are false. It is perfectly legal to have an underscore in a domain name. Let me quote the standard, RFC 2181, section 11, “Name syntax”: The DNS itself places only one restriction on the particular labels that can be used to identify resource records. That one restriction relates to the length … Read more
This is how I use it across domains… Use an iframe from your parent domain – say parent.com Then on each child.com domain, just do a postMessage to your parent.com iframe All you need to do is setup a protocol of how to interpret your postMessage messages to talk to the parent.com iframe. I hope … Read more
You’re looking to create a custom A record. I’m pretty sure that you can use wildcards when specifying A records which would let you do something like this: *.mywebsite.com IN A 127.0.0.1 127.0.0.1 would be the IP address of your webserver. The method of actually adding the record will depend on your host. Doing it … Read more
Try putting this in your .htaccess file: RewriteEngine on RewriteCond %{HTTP_HOST} ^sub.domain.com RewriteRule ^(.*)$ /subdomains/sub/$1 [L,NC,QSA] For a more general rule (that works with any subdomain, not just sub) replace the last two lines with this: RewriteEngine on RewriteCond %{HTTP_HOST} ^(.*)\.domain\.com RewriteRule ^(.*)$ subdomains/%1/$1 [L,NC,QSA]
The quick rundown You need to create a wildcard domain on your DNS server *.website.com Then in your vhost container you will need to specify the wildcard as well *.website.com – This is done in the ServerAlias DOCs Then extract and verify the subdomain in PHP and display the appropriate data The long version 1. … Read more
If you set a cookie like this: Set-Cookie: name=value then the cookie will only apply to the request domain, and will only be sent for requests to the exact same domain, not any other subdomains. (See What is a host only cookie?) Two different domains (e.g. mydomain.com and subdomain.mydomain.com, or sub1.mydomain.com and sub2.mydomain.com) can only … Read more
From the spec 10.3.2 301 Moved Permanently The requested resource has been assigned a new permanent URI and any future references to this resource SHOULD use one of the returned URIs. Clients with link editing capabilities ought to automatically re-link references to the Request-URI to one or more of the new references returned by the … Read more