Subdomains with PHP and htaccess

[mignolo]

I've many domains running on the same script with htaccess and php; this is the scheme:
index.php running on www.maindomain.com, then
www.domain1.com -> index.php?dn=domain1.com
www.domain2.com -> index.php?dn=domain2.com
www.domain3.com -> index.php?dn=domain3.com
...

Now I want this:
subdomain1.domain1.com -> index.php?dn=domain1.com&cat=subdomain1
subdomain2.domain1.com -> index.php?dn=domain1.com&cat=subdomain2
...
subdomain1.domain2.com -> index.php?dn=domain2.com&cat=subdomain1
subdomain2.domain2.com -> index.php?dn=domain2.com&cat=subdomain2
...

How I can obtain this with htaccess?

 

[mr-x]

I dont' have a host to test this but I off the top of my head,

RewriteRule (.*).domain1.com index.php?dn=domain1.com&cat=$1

The above won't work but another solution is possible, grab the sub-domain using php,

$uri_parts = explode('.',$_SERVER['HTTP_HOST']);
print_r($uri_parts);

// check if a sub-domain is included, 
if (count($uri_parts == 3) && $uri_parts[0] != 'www')
{
     $cat = $uri_parts[0];
}
else if (count($uri_parts >3))
{
     $cat = ($uri_parts[0] != 'www') ? $uri_parts[0] : $uri_parts[1];
}
print $cat;

The above should assign 'test' to $cat using the URL's ww.test.example.com as well as test.example.com

 

[monaco]

If you use mod_rewrite don't forget to turn the RewriteEngine on and set a condition for rewrite

 

[Daniel]

Hi there, what Control Panel do you use? I have a script which creates email forwarders for Cpanel, which is easily changable to sub domains. Not sure if this is what you want though.

 

[mignolo]

I have Cpanel on Godaddy VPS

I should post "domain1.com" in the query, but it's a variable too:
(.*).(.*).com
Is it possible for htaccess to select the domain name that isn't always the same?

I dont' have a host to test this but I off the top of my head,

RewriteRule (.*).domain1.com index.php?dn=domain1.com&cat=$1

The above won't work but another solution is possible, grab the sub-domain using php,

$uri_parts = explode('.',$_SERVER['HTTP_HOST']);
print_r($uri_parts);

// check if a sub-domain is included, 
if (count($uri_parts == 3) && $uri_parts[0] != 'www')
{
     $cat = $uri_parts[0];
}
else if (count($uri_parts >3))
{
     $cat = ($uri_parts[0] != 'www') ? $uri_parts[0] : $uri_parts[1];
}
print $cat;

The above should assign 'test' to $cat using the URL's ww.test.example.com as well as test.example.com

 

[mr-x]

I have Cpanel on Godaddy VPS

I should post "domain1.com" in the query, but it's a variable too:
(.*).(.*).com
Is it possible for htaccess to select the domain name that isn't always the same?

You can use %{HTTP_HOST} in .htaccess. In PHP, $_SERVER['HTTP_HOST'] will have the same data.

Here is a cheat sheet for mod_rewrite, http://www.ilovejackdaniels.com/apache/mod_rewrite-cheat-sheet/

for what it's worth, the main problem I've had redirecting multiple domains to one script with mod_rewrite is recursion.

I think it's easier to let mod_rerwrite hand the normal stuff like friendly URL's and grab the host header from $_SERVER['HTTP_HOST']. Take a look at http://php.net/parse_url for some examples