redirection selon ip en php

<?php
 header("Status: 301 Moved Permanently", false, 301);
$ip = $_SERVER["REMOTE_ADDR"];

echo $ip;
$needle="192.168.14";
if (strpos($ip,$needle) !== false) {
  header("Location: http://aaaa/");
}
else
 header("Location: http://bbbbbb/");

//
exit();
 ?>