php whois stopped working on another server - php

Question

I am using this whois class, it works fine on one server but it does not work properly on another server with the same PHP version 5.4, on first server it returns domain name status correctly, but on the other one it returns just one status: "domain name is not available" while the domain name is actually available.
<?
class Whois_domain {
var $possible_tlds;
var $whois_server;
var $free_string;
var $whois_param;
var $domain;
var $tld;
var $compl_domain;
var $full_info;
var $msg;
var $info;
var $os_system = "linux"; // switch between "linux" and "win"
function Whois_domain() {
$this->info = "";
$this->msg = "";
}
function process() {
if ($this->create_domain()) {
if ($this->full_info == "yes") {
$this->get_domain_info();
} else {
if ($this->check_only() == 1) {
$this->msg = "The domain name: <b>".$this->compl_domain."</b> is free.";
return true;
} elseif ($this->check_only() == 0) {
$this->msg = "The domain name: <b>".$this->compl_domain."</b> is not available";
return false;
} else {
$this->msg = "There was something wrong, try it again.";
}
}
} else {
$this->msg = "Only letters, numbers and hyphens (-) are valid!";
}
}
function check_entry() {
if (preg_match("/^([a-z0-9]+(\-?[a-z0-9]*)){2,63}$/i", $this->domain)) {
return true;
} else {
return false;
}
}
function create_tld_select() {
$menu = "<select name=\"tld\" style=\"margin-left:0;\">\n";
foreach ($this->possible_tlds as $val) {
$menu .= " <option value=\"".$val."\"";
$menu .= (isset($_POST['tld']) && $_POST['tld'] == $val) ? " selected=\"selected\">" : ">";
$menu .= $val."</option>\n";
}
$menu .= "</select>\n";
return $menu;
}
function create_domain() {
if ($this->check_entry()) {
$this->domain = strtolower($this->domain);
$this->compl_domain = $this->domain.".".$this->tld;
return true;
} else {
return false;
}
}
function check_only() {
$data = $this->get_whois_data();
if (is_array($data)) {
$found = 0;
foreach ($data as $val) {
if (eregi($this->free_string, $val)) {
$found = 1;
}
}
return $found;
} else {
$this->msg = "Error, please try it again.";
}
}
function get_domain_info() {
if ($this->create_domain()) {
$data = ($this->tld == "nl") ? $this->get_whois_data(true) : $this->get_whois_data();
if (is_array($data)) {
foreach ($data as $val) {
if (eregi($this->free_string, $val)) {
$this->msg = "The domain name: <b>".$this->compl_domain."</b> is free.";
$this->info = "";
break;
}
$this->info .= $val;
}
} else {
$this->msg = "Error, please try it again.";
}
} else {
$this->msg = "Only letters, numbers and hyphens (-) are valid!";
}
}
function get_whois_data($empty_param = false) {
// the parameter is new since version 1.20 and is used for .nl (dutch) domains only
if ($empty_param) {
$this->whois_param = "";
}
if ($this->tld == "de") $this->os_system = "win"; // this tld must be queried with fsock otherwise it will not work
if ($this->os_system == "win") {
$connection = #fsockopen($this->whois_server, 43);
if (!$connection) {
unset($connection);
$this->msg = "Can't connect to the server!";
return;
} else {
sleep(2);
fputs($connection, $this->whois_param.$this->compl_domain."\r\n");
while (!feof($connection)) {
$buffer[] = fgets($connection, 4096);
}
fclose($connection);
}
} else {
$string = "whois -h ".$this->whois_server." \"".$this->whois_param.$this->compl_domain."\"";
$string = str_replace (";", "", $string).";";
exec($string, $buffer);
}
if (isset($buffer)) {
//print_r($buffer);
return $buffer;
} else {
$this->msg = "Can't retrieve data from the server!";
}
}
}
?>
I changed files permissions and php versions on the other server, but still the same.

Answer 1

This has been solved, it was fsockopen restrictions on the server, it is fine now.