| Resident Linux Geek Name: Michael Walker Location: East Yorkshire, England Join Date: Aug 2005
Posts: 2,413
NP$: 300.25 ( Donate)
| A whois class (sort of)
This isn't actually a whois class, it's a class that selects a whois server for a domain. If multiple whois servers are available, it chooses a random one.
The script uses this XML file to get the servers ( human-readable version here).
As per their request, by default the class keeps a local cache of the XML file and updates once a day. To enable caching, make the directory the cache will be in writable. To disable caching change
To
Here is the class PHP Code: class whoisserver{
var $url = "http://serverlist.domaininformation.de/";
var $cache = "whois.xml";
var $use_cache = true;
function parsexml($file){
$parser = xml_parser_create('');
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, 0);
xml_parser_set_option($parser, XML_OPTION_SKIP_WHITE, 1);
xml_parse_into_struct($parser, file_get_contents($file), $tags);
xml_parser_free($parser);
$elements = array();
$stack = array();
foreach($tags as $tag){
$index = count($elements);
if($tag['type'] == "complete" || $tag['type'] == "open"){
$elements[$index] = array();
$elements[$index]['name'] = $tag['tag'];
$elements[$index]['attributes'] = empty($tag['attributes']) ? "" : $tag['attributes'];
$elements[$index]['content'] = empty($tag['value']) ? "" : $tag['value'];
if($tag['type'] == "open"){ # push
$elements[$index]['children'] = array();
$stack[count($stack)] = &$elements;
$elements = &$elements[$index]['children'];
}
}
if($tag['type'] == "close"){ # pop
$elements = &$stack[count($stack) - 1];
unset($stack[count($stack) - 1]);
}
}
return $elements[0];
}
function cachecheck(){
if(!file_exists($this->cache) || filemtime($this->cache) < time() - 86400 && $this->use_cache == true){
$xml = file_get_contents($this->url);
unlink($this->cache);
$fp = fopen($this->cache, "w+");
fwrite($fp, $xml);
fclose($fp);
return true;
}else{
return false;
}
}
function getxml(){
$file = ($this->use_cache == true) ? $this->cache : $this->url;
$xml = $this->parsexml($file);
return $xml;
}
function getservers(){
$xml = $this->getxml();
$servers = array();
foreach($xml['children'] as $child){
if(!empty($child['children'])){
foreach($child['children'] as $baby){
if($baby['name'] == 'domain'){
if(empty($servers["{$baby['attributes']['name']}"])){
$servers["{$baby['attributes']['name']}"] = array("{$child['attributes']['host']}");
}else{
$servers["{$baby['attributes']['name']}"][] = "{$child['attributes']['host']}";
}
}
}
}
}
return $servers;
}
function pickserver($tld){
$servers = $this->getservers();
if(!empty($servers["{$tld}"])){
$server = $servers["{$tld}"];
if(count($server) != 1){
return $server[array_rand($server)];
}else{
return $server[0];
}
}else{
return false;
}
}
function go($domain){
$this->cachecheck();
$domain = str_replace('www.', '', $domain);
$domain = strrev($domain);
$domain = explode('.', $domain);
if(count($domain) == 3){
$tld = strrev($domain[1]) . '.' . strrev($domain[0]);
}else{
$tld = strrev($domain[0]);
}
$server = $this->pickserver($tld);
return $server;
}
}
I wrote the whole class except the parsexml() function which I found on php.net. Do what you want with the code.
Here are two examples: PHP Code: $ws = new whoisserver;
echo $ws->go("http://www.yarrt.com")."\n"; // should return "whois.crsnic.net"
echo $ws->go("http://hello.uyp")."\n"; // should return false
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