Description:
------------
---
From manual page: http://www.php.net/function.filter-var#refsect1-function.filter-var-description
---

When we are behind a web proxy the filter_var just does not return and just ends. To test I am using the web proxy 186.42.212.236 port 3128

And when I run the test script output is

start > x_fwded_4 > filtering

where as expected output should be returning value from the function filter_var anything from the function and control should progress further.

Test script:
---------------

<?php
echo 'start';
if (isset($_SERVER['HTTP_X_FORWARDED_FOR']))
{
echo ' > x_fwded_4';
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
}
else if (isset($_SERVER['HTTP_CLIENT_IP']))
{
echo ' > client_ip';
$ip = $_SERVER['HTTP_CLIENT_IP'];
}
else if (isset($_SERVER['HTTP_FROM']))
{
echo ' > from';
$ip = $_SERVER['HTTP_FROM'];
}
else
{
echo ' > remote';
$ip = $_SERVER['REMOTE_ADDR'];
}
echo ' > filtering';
filter_var($ip, FILTER_VALIDATE_IP);
echo ' > end';
?>

Expected result:
----------------
filter_var function should return and not die or exit.

Actual result:
--------------
start > x_fwded_4 > filtering