Description:
------------
If you submit a form with checkbox inputs which have same name but differents value, the $HTTP_GET_VARS and $HTTP_POST_VARS contain one value (not all the checkbox checked).
Nevertheless, the browser send values of all the checked inputs.

Configuration:
xp pro whith all updates
SERVER_SOFTWARE : Microsoft-IIS/5.1
Browser : Microsoft Internet Explorer Version 6.0.2600.0000.xpclnt_qfe.021108-2107

php.ini changes:
cgi.force_redirect = 0
fastcgi.impersonate = 1
file_uploads = On
upload_max_filesize = 2M

Reproduce code:
---------------
<FORM NAME="f" ACTION="http://localhost/test.php" METHOD="post" >
  <INPUT TYPE="Checkbox" NAME="groupes" VALUE="65">
  <INPUT TYPE="Checkbox" NAME="groupes" VALUE="55">
  <INPUT TYPE="Checkbox" NAME="groupes" VALUE="50">
  <INPUT TYPE="submit" >
</form>

test.php:
<?php
print_r($HTTP_POST_VARS);
?>

Expected result:
----------------
Array ( [groupes] => Array ( [0]=>65 [1]=>55 [2]=>50 ) )
For sample or
Array ( [groupes] => "65_55_50" )


Actual result:
--------------
result: Array ( [groupes] => 50 )
Yet i checked the three inputs and the browser send this query string :groupes=65&groupes=55&groupes=50

(This result is normal when it is known that $HTTP_POST_VARS is an associate array but it's not very logical)