How to disable caching 100%

Question

Possible Duplicate:
Cache Control fails

I am currently using:

header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");

and

<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="-1">
<meta http-equiv="pragma" content="no-cache">

Yet it still caches

Solution 1

You can also add Pragma: no-cache. And make sure Last-Modified is far enough in the past: some small clock skews between the client and the server could trick your client into thinking it has a fresh version of the document; use Tue, 15 Nov 1994 12:45:26 GMT for example. And also add an Expires header with date in the past.

Solution 2

I normally add this in my .htaccess

<filesMatch "\.(js|css)$">
FileETag None
<ifModule mod_headers.c>
Header unset ETag
Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate"
Header set Pragma "no-cache"
Header set Expires "Wed, 11 Jan 1984 05:00:00 GMT"
</ifModule>
</filesMatch>

Modify the fileMatch to add other extentions ...