GET2POST in PHP

gistfile1.txt

<?                                                                                           
$url = $_GET['URL2GO'];
unset($_GET['URL2GO']);
$data = $_GET;

$options = array(
      'http' => array(
      'header'  => "Content-type: application/x-www-form-urlencoded\r\n",
      'method'  => 'POST',
      'content' => http_build_query($data),
    ),
); 
$context  = stream_context_create($options);
$result = file_get_contents($url, false, $context);
echo $result;