On Wed, 1 Nov 2006, khaja mohideen wrote:
> Notice: Undefined index: gs in
> /var/www/forums/html/ganglia/get_context.php on line
> 44
It appears get_context.php is looking for a cookie that doesn't exist. For
whatever reason, this error is generating some output which PHP interprets as
content meant for the client's browser.
> Warning: Cannot modify header information - headers
> already sent by (output started at
> /var/www/forums/html/ganglia/get_context.php:44) in
> /var/www/forums/html/ganglia/header.php on line 56
All of these messages occur because header information cannot be changed once
content starts being generated for the client. The previous error in
get_context.php started generating output, so then all calls to setcookie() or
header() fail.
So it looks like the real question is: How is get_context.php getting run
without a "gs" parameter being set in the GET request or in a cookie? I'm
afraid I don't know the answer to that. One option might be to add some extra
checking to these lines in get_context.php:
# Set a default value for gridstack
$gridstack = array("DEFAULT");
if (isset($_GET["gs"]) and $_GET["gs"])
$gridstack = explode(">", rawurldecode($_GET["gs"]));
else if (isset($_COOKIE["gs"]))
$gridstack = explode(">", $_COOKIE["gs"] );
But I haven't tested this code out so I can't be certain that it works.
-- Rick
--------------------------
Rick Mohr
Systems Developer
Ohio Supercomputer Center
