I know I could reduce the expiration time to reduce this problem but
most of the time those files do not change. What can I do to notify the
web browser that the file in the cache is no longer valid?
-William
William:
Include this:
<?php # nocache.php
// this script prevents all caching
// expires on any past date
header ("Expires: Mon, 26 Jul 1997 05:00: GMT");
// last modified at current date and time
header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
// for HTTP 1.1:
header ("Cache-Control: no-store, no-cache, must-revalidate");
header ("Cache-Control: post-check=0, pre-check=0", false);
// for HTTP 1.0
header ("Pragma: no-cache");
?>
HTH's
tedd
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