SFS Check

function SFSCheck($ip, $email = '')
{
  ini_set('default_socket_timeout',15);
  $email = (!empty($email)) ? '&email=' . urlencode($email) : '';
  $SFSurl = 'http://www.stopforumspam.com';
  $SFSget = '/api?ip=' . $ip . $email . '&f=serial';
  if(ini_get('allow_url_fopen') == 1)
  {
    $SFSdata = @file_get_contents($SFSurl . $SFSget);
  }
  else
  {
    $fp = @fsockopen("www.stopforumspam.com", 80);
    if($fp)
    {
      $out  = "GET " . $SFSget . " HTTP/1.0\r\n";
      $out .= "Host: www.stopforumspam.com\r\n";
      $out .= "Connection: Close\r\n\r\n";
      fwrite($fp, $out);
      while (!feof($fp))
      {
        $foo = fgets($fp);
        if(strpos($foo, 'a:') === 0)
        {
          $SFSdata = $foo;
        }
      }
    }
    else
    {
      $SFSdata = false;
    }
  }
  if($SFSdata === false)
  {
    return false;
  }
  else
  {
    $SFSdata = @unserialize($SFSdata);
    if($SFSdata !== false)
    {
      if(isset($SFSdata['ip']['confidence']))
      {
        // Do what you want to do with the ip confidence level
      }
      if(isset($SFSdata['email']['confidence']))
      {
        // Do whatever you want to do if there is an email confidence score
      }
    }
  }
  return false;
}