effective-TLDs

PHP code to build TLD Suffix set from publicsuffix.org, as well as a class for determining a domain's public suffix. Handles wildcards and exception cases. Correctly gives the public suffix for omg.blogspot.com.au ('omg.blogspot.com.au'), omg.com.au ('omg.com.au'), and omg.au (null), whereas other implementations in PHP either have trouble or onerous licensing.

Installation

Download the files and place them somewhere in your PHP include path. Alternatively, specify a fully qualified path in your includes.

require_once('class.EffectiveDomain.php');

Use

echo EffectiveDomain::getPublicSuffix("omg.hillgod.com")."\n";

$> php myScript.php
hillgod.com
$>

Updating TLDs

updateEffectiveTLDs.php is included to build effectiveTLDs.inc.php from the latest list of public suffixes at Publicsuffix.org. This link can be modified in updateEffectiveTLDs.php.

$> php updateEffectiveTLDs.php > effectiveTLDs.inc.php