Web Hosting Talk : Web Hosting Main Forums : Programming Discussion : Programming Tutorials : Script: Subdomain->Domain Redirect

[Dan L]

PHP Code:

<?php
    $domain = $_SERVER['SERVER_NAME'];
    $data = $_SERVER['REQUEST_URI'];
    
    if(fnmatch('*.*.*',$domain)) {
        $domain = explode('.',$domain);
        $newDomain = $domain[1].'.'.$domain[2].'/'.$domain[0].$data;
        
        header('Location: '.$newDomain);
    } else {
        echo 'Could not forward from this URL.';
    }
?>

This script takes a subdomain such as 'subdomain.example.com/index.php?a=test' and transforms it into 'example.com/subdomain/index.php?a=test'

This is helpful is you want to have subdomains point to a folder on your main domain.

Note: This does not support TLDs such as '.co.uk', '.com.cn', or any TLDs with two parts.

[Korvan]

To support those TLDs simply adding a $domain[3] and another .* inside the fnmatch should work.

PHP Code:

<?php 
$domain = $_SERVER['SERVER_NAME']; 
$data = $_SERVER['REQUEST_URI']; 
 
if(fnmatch('*.*.*.*',$domain)) { 
$domain = explode('.',$domain); 
$newDomain = $domain[1].'.'.$domain[2]'.'.$domain[3].'/'.$domain[0].$data; 
 
header('Location: '.$newDomain); 
} else { 
echo 'Could not forward from this URL.'; 
} 
?>

[Dan L]

As far as I know, that would only match .*.* extensions, not .*

[Korvan]

Originally Posted by DanX

As far as I know, that would only match .*.* extensions, not .*

Yes, that is correct, it will only support .co.uk and not .com for example.

Also considering peoples main subdomain is usually www you can code it like this for support of both types of TLD's

PHP Code:

$domain = $_SERVER['SERVER_NAME']; 
$data = $_SERVER['REQUEST_URI']; 
 
 
$domain = explode('.',$domain); 
if($domain[0] != 'www')
{
$newDomain = 'http://www.'.$domain[1].'.'.$domain[2].($domain[3] ? '.'.$domain[3] : '').'/'.$domain[0].$data; 
header('Location: '.$newDomain); 
echo("You are being redirected to <A HREF=\"{$newDomain}\">{$newDomain}</A>");
exit();
}
 
//continue page output 


This will only work if you use www to access the root of your site.

[Dan L]

Well the script was originally coded since someone wanted to redirect the same way cPanel does.

The echo is sort of pointless since nothing is output after the header.