ARC2::splitURI PHP Method

    static function splitURI($v)
    {
        /* the following namespaces may lead to conflated URIs,
         * we have to set the split position manually
         */
        if (strpos($v, 'www.w3.org')) {
            $specials = array('http://www.w3.org/XML/1998/namespace', 'http://www.w3.org/2005/Atom', 'http://www.w3.org/1999/xhtml');
            foreach ($specials as $ns) {
                if (strpos($v, $ns) === 0) {
                    $local_part = substr($v, strlen($ns));
                    if (!preg_match('/^[\\/\\#]/', $local_part)) {
                        return array($ns, $local_part);
                    }
                }
            }
        }
        /* auto-splitting on / or # */
        //$re = '^(.*?)([A-Z_a-z][-A-Z_a-z0-9.]*)$';
        if (preg_match('/^(.*[\\/\\#])([^\\/\\#]+)$/', $v, $m)) {
            return array($m[1], $m[2]);
        }
        /* auto-splitting on last special char, e.g. urn:foo:bar */
        if (preg_match('/^(.*[\\:\\/])([^\\:\\/]+)$/', $v, $m)) {
            return array($m[1], $m[2]);
        }
        return array($v, '');
    }

 function splitURI($v)
 {
     return ARC2::splitURI($v);
 }