Last updated on May 23rd, 2016 at 04:06 pm
Prevent caching Firefox Internet Explorer Using no-cache
You can prevent any caching in IE by simply setting this response header:
Also check Disable Browser Back Button
Pages that use this header arenâ€™t stored in the cache and IE will always reload them from the server; even if you use the Back button to reach them.
<?php header("Cache-Control: no-cache, must-revalidate"); ?>
These two header values can be combined to get the required effect on both IE and Firefox:
Cache-Control: no-cache, no-store
To properly prevent the Web page from appearing in the cache, place another header section at the end of the HTML document. For example:
< META HTTP-EQUIV="EXPIRES" CONTENT="-1" /> < /HEAD> < /HTML>
This is an example of where to place the second header section
< META HTTP-EQUIV="PRAGMA" CONTENT="NO-CACHE" /> < /HEAD> < /HTML>
Note: For the tag:
<meta http-equiv="expires" content="-1">
-1 means do not cache and expire straight away.
Therefore, when the user click the Back button, they will get the warning: Page has Expired – Please Refresh or resubmit information etc…. in Internet Explorer.
Note: these meta tags need to be within the HEAD section. This is very important.