php versiyon sorunu nasıl çözülür ?

<?php
$phpver = phpversion();
if ($phpver < '4.1.0') {
  $_GET = $HTTP_GET_VARS;
  $_POST = $HTTP_POST_VARS;
  $_SERVER = $HTTP_SERVER_VARS;
  $_FILES = $HTTP_POST_FILES;
  $_ENV = $HTTP_ENV_VARS;
  if($_SERVER['REQUEST_METHOD'] == "POST") {
    $_REQUEST = $_POST;
  } elseif($_SERVER['REQUEST_METHOD'] == "GET") {
    $_REQUEST = $_GET;
  }
  if(isset($HTTP_COOKIE_VARS)) {
    $_COOKIE = $HTTP_COOKIE_VARS;
  }
  if(isset($HTTP_SESSION_VARS)) {
    $_SESSION = $HTTP_SESSION_VARS;
  }
}
if($phpver >= '4.1.0') {
  $HTTP_GET_VARS = $_GET;
  $HTTP_POST_VARS = $_POST;
  $HTTP_SERVER_VARS = $_SERVER;
  $HTTP_POST_FILES = $_FILES;
  $HTTP_ENV_VARS = $_ENV;
  $PHP_SELF = $_SERVER['PHP_SELF'];
  if(isset($_SESSION)) {
    $HTTP_SESSION_VARS = $_SESSION;
  }
  if(isset($_COOKIE)) {
    $HTTP_COOKIE_VARS= $_COOKIE;
  }
}
?>