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Need to get parent domain name using PHP (that excludes the subdomain prefix)

I need a simple php script that first gets the hostname using $_SERVER['HTTP_HOST'], and that then extracts the parent domain from that url.

For example, .. if the HTTP_HOST value is "clients.mywebsite.com", .. I need to extract the "mywebsite.com" domain from it and store it in a variable. Please advise.

Thanks!
- Yvan

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dtrance

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Swafnil

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egoselfaxis

ASKER

Swafni -- your script does not work for me -- it only returns and displays a period (.):

$domainArray= explode('.', $_SERVER['HTTP_HOST']);
$intDomParts= count($domainArray);
$domainName= $domainArray[intDomParts-2]. '.' . $domainArray[intDomParts-1];

echo $domainName;

egoselfaxis

ASKER

Nevermind guys .. I figured out a simpler way to do it:

list($sd, $pd, $ds) = split('[.]', $_SERVER['HTTP_HOST']);
$thedomain = "http://" . $pd . "." . $ds;

I'll just award the points to you guys anyways -- thanks for your efforts!

- Yvan

Swafnil

Hi again,

sorry, I couldn't test my script at work and forgot the dollar mark before the "intDomParts" in line 3.

Your solution has the drawback that it splits the domain name beginning from the start of the string instead of the end, in case of subdomains with more than one part ("login.customer.mydomain.com"), the generated domain name would be quite useless.
To be honest, it all depends on where your script will be used, if your company only has one subdomain level, your chosen script will work absolutely fine ;-)

Thanks for giving assist points!

egoselfaxis

ASKER

Yes -- we only deal with 3rd level domains (single subodmain prefixes).

- yg