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Dynamic Subdomain PHP

Answer 1

+2 A:

You cant in htaccess, you must setup a wild card virtual host and rewrite it to the URL/directory you require. See http://blog.orite.com.au/web_development/2009-01-22/setting-up-wildcard-virtual-hosts-for-web-development-environment/ for more info

Petah 2010-10-20 09:52:50

`You cant in htaccess`. Actually... http://corz.org/serv/tricks/htaccess2.php (look for 'multiple domains in one root').

passcod 2010-10-20 10:02:05

i've read that, and the code is like this:<VirtualHost *:80> VirtualDocumentRoot c:/projects/%1/</VirtualHost>where do i put this code? in htaccess?

Henson 2010-10-20 10:02:55

In the `httpd.conf` or equivalent file (system dependent).

Petah 2010-10-20 10:09:53

okay, that is if i try that in my localhost. So what about in hosting? And some websites can link purchased domain (for example purchased.com) to their main websites. how is it achievable?

Henson 2010-10-20 10:11:18

@passcod, Actually, you can't. That method applies only if the web server is already setup to map both domains to one directory.

Petah 2010-10-20 10:12:31

@Henson, same applies weather on your local web server or a remote web server. You will need access to the http configuration file.

Petah 2010-10-20 10:13:52

update, I activated vhost_alias module, add <VirtualHost> line in the bottom of httpd.conf, restart wamp, then try project.localhost and failed. It redirects to http://www.project.localhost in firefox, and in chrome it simply displays no page found.

Henson 2010-10-20 10:21:47

@Henson, You need to make sure `project.localhost` points to your web servers IP address. On a local Windows development web server you will need to edit `C:\Windows\System32\drivers\etc\hosts` and add `127.0.0.1 project.localhost`

Petah 2010-10-20 11:14:37

@Petah : Ok, I get it. so how do i do it dynamically / automatically? I mean, each time, a user registers, there will be a new subdomain. From what you say, I have to input manually for every new subdomains right?

Henson 2010-10-20 15:18:08

@Henson, once you have a DNS (or hosts file if running locally) pointing at the right IP/domain (you will need a wild card DNS record), it will be automatic. You will just need to create the right directory on register.

Petah 2010-10-20 22:07:33

Answer 2

A:

You can parse $_SERVER['SERVER_NAME'] to determine which subdomain is used. The www part is actually never necessary. This is simply a subdomain that has no meaning. Most of the time it is simply mapped to the main domain. Example:

if (preg_match('/^(www\.)?(.+)\.your-domain.com$/', $_SERVER['SERVER_NAME'], $matches) && $matches[2] != 'www') {
    $subdomain = $matches[2];
    // your logic goes here
}

elusive 2010-10-20 09:54:55

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