Description:
------------
HTTP Authentication is not working. The login box keeps on coming back and $_SESSION['PHP_AUTH_USER'] and $_SERVER['PHP_AUTH_PW'] are never intilized. i spent 2 hours on it till i see there were same HTTP Authentication issue with earlier PHP versions. I even upgraded to latest fixzes from snaps.php.net and it di't still solve it.
I am using Apache 2.0.44 just in case its server's issue.

There are already issues but i din't see any with PHP4.3.10(and now after updating from snaps.php.net PHP4.3.11)
so, i figured its good to mention so it can be fixed.

Reproduce code:
---------------
function error ($error_message)
{
	echo $error_message."<BR>";
	exit;
}

if ( (!isset($_SERVER['PHP_AUTH_USER'])) || $_SERVER['PHP_AUTH_USER'] !='user' || $_SERVER['PHP_AUTH_PW']!='pass')
{
	header("WWW-Authenticate: Basic entrer=\"Admin\"");
	header("HTTP/1.0 401 Unauthorized");
	error("Unauthorized access...");
}
else
{
	echo 'You are logged in..';
}

Expected result:
----------------
You are logged in..

Actual result:
--------------
Login box keeps on coming and it says $_SERVER['PHP_AUTH_PW'] undefined index