I'm using base64_decode() for outputting images in KSMAS. I'm using now a rather big image in the header and I'd like to let it be cached by the browser, but I don't have a clue on how to do that.

I'm using he central script (index.php) to output images when it has an argument 'img' passed through GET. (like index.php?img=head)

The question is how to cache only certain outputs?

Send headers that tell the browser to cache it, and only send them with stuff you want cached? I'm not sure if it will work, but worth a try...

code:

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// date in the past
header("Last-Modified: Tue, 01 Jul 2003 00:00:00 GMT");
// date in the future
header("Expires: ".gmdate("D, d M Y H:i:s", time() + 86400)." GMT");

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Nice, it worked, thanks!

I didn't think this would work very well with parametric URLs as it usually causes browsers to avoid caching it

Anyway, I'm happy to know this works