content expiration

[_mt]

Is php is possible to either: stop a page being cached.

or, set content expiration somehow??

I have an admin section for a site and it lets you modify records, however if you delete/modify a record when you return to the page which lists them all it just gets the page out of cache, instead off requerying the database.

Which means you could click on a link for a record you deleted!

Thanks in advance.
-Matt

[cahva]

Add a metatag in your HTML:

<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta http-equiv="Cache-Control" content="must-revalidate">
<meta http-equiv="Pragma" content="no-cache">

Should do the trick...

[jerdo]

I like the php way of doing this:
Header("Cache-control: private, no-cache");
Header("Expires: Mon, 26 Jun 1997 05:00:00 GMT");
Header("Pragma: no-cache");

[zalath]

You are aware, that sometimes that just simply does not work?
In my experience, the worst case was that I set at least four php headers to prevent caching and added the html meta tags - and still the proxy server between my workstation and the server cached the document. The objective was to force a reload of the page if the back button was pressed (you know the 'content has expired' text). The result was far from satisfactory.