blocco ip problema

[cubalibre810]

<?php

$mobile = "accesso_impedito.php";
$text = $_SERVER["REMOTE_ADDR"];
$var[0] = '172.17.0.84';
$var[1] = '172.17.0.81';

if(in_array($text, $var))
{
   header("Location: " . $mobile);
   exit();
}
?>