Twwk checker (in-gala.com)

<?php

$inuser = 'Dekk';
$incode = '777';

$inlogin = iconv('CP1251','UTF-8',$inuser);

function pars($in,$from,$to){
   preg_match('#'.$from.'(.*)'.$to.'#',$in,$out);
   return $out[1];
};

function twwkget($url,$isparse,$login,$pass,$hash){
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $url);
   curl_setopt($ch, CURLOPT_REFERER, $url);
   curl_setopt($ch, CURLOPT_VERBOSE, 1);

   if (!empty($isparse)):
    curl_setopt($ch, CURLOPT_POSTFIELDS,'lifm=lifm&lifm:login='.$login.'&lifm:pass='.$pass.'&lifm:j_idt49=Войти&from=&javax.faces.ViewState='.$hash);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $_SERVER['DOCUMENT_ROOT'].'/cookie.txt');
   else:
    curl_setopt($ch, CURLOPT_POST, 0);
    curl_setopt($ch, CURLOPT_COOKIEJAR, $_SERVER['DOCUMENT_ROOT'].'/cookie.txt');
   endif;

   curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
   curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/4.0 (Windows; U; Windows NT 5.0; En; rv:1.8.0.2) Gecko/20070306 Firefox/1.0.0.4');
   curl_setopt($ch, CURLOPT_HEADER, 1);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
   $result=curl_exec($ch);
   curl_close($ch);
   return $result;
}

$hash = pars(twwkget('http://twwk.ru/login.xhtml','','','',''),'id="j_id1:javax.faces.ViewState:0" value="','" autocomplete');

if (!empty($hash)):
  $html = twwkget('http://twwk.ru/login.xhtml',1,$inlogin,$incode,$hash);
  if (!strripos($html,'login-link-exit')):
    echo 'No valid!';
  else:
    echo 'Valid!';
  endif;
else:
  echo 'Hash is empty.';
endif;
?>