fsockopen

<!DOCTYPE HTML>
<html lang="en-US">
<head>
  <meta charset="UTF-8">
  <title></title>
</head>
<body>
<form action="" method="GET">
<input type="text" name="ip" value="<?php echo (isset($_GET['ip'])) ? $_GET['ip'] : '';?>" /><br />
<input type="checkbox" value="1" name="getMethod" /> use fsockopen<br />
<input type="submit" value="Check IP" />
</form>

<?php
if(isset($_GET['ip']))
{
  if(isset($_GET['getMethod']))
  {
    echo '<h3>Trying with fsockopen...</h3>';
    $SFSdata = fetchURL($_GET['ip']);
  }
  else
  {
    echo '<h3>Trying with file_get_contents...</h3>';
    $SFSurl = 'http://www.stopforumspam.com/api?ip=' . $_GET['ip'] . '&f=serial';
    $SFSdata = file_get_contents($SFSurl);
  }
  if(!empty($SFSdata))
  {
    echo $SFSdata . '<br />';
    $SFSdata = unserialize($SFSdata);
    echo '<pre>';
    print_r($SFSdata);
    echo '</pre>';
    if(isset($SFSdata['ip']['confidence']))
    {
      echo 'Confidence: ' . $SFSdata['ip']['confidence'] . '<br />';
      if($SFSdata['ip']['confidence'] >= 50)
      {
        echo 'Blocked';
      }
    }
  }
  else
    echo 'hmmm';

}

function fetchURL($ip)
{
  $fp = fsockopen('www.stopforumspam.com', 80);
  $out = "GET /api?ip=' . $ip . '&f=serial HTTP/1.1\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:2:{') === 0)
    {
      $SFSdata = $foo;
    }
  }
  fclose($fp);
  return $SFSdata;
}
?>
</body>
</html>