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mistakes!

cache

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hello. i know this headers are for caching control henceb the browser is not allowed to cache the pages locally

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: post-check=0, pre-check=0', FALSE);
header('Pragma: no-cache');

apart from that what else does it do for me? how does ot make my programme better?

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[!--quoteo(post=372433:date=May 8 2006, 06:09 PM:name=mistakes!)--][div class=\'quotetop\']QUOTE(mistakes! @ May 8 2006, 06:09 PM) [snapback]372433[/snapback][/div][div class=\'quotemain\'][!--quotec--]
hello. i know this headers are for caching control henceb the browser is not allowed to cache the pages locally

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT');
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: post-check=0, pre-check=0', FALSE);
header('Pragma: no-cache');

apart from that what else does it do for me? how does ot make my programme better?
[/quote]

It depends on wether you want the page cached or not. If it is a page that updates frequently then you probably would want those headers.

Those headers are just preventing cache by setting the cache expiration to an obviously past tense date. They all work together to basically do the same thing

header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); //SET EXPIRATION

header('Cache-Control: no-store, no-cache, must-revalidate'); // TELLS BROWSER THAT IF CACHED IT SHOULDN'T USE IT

header('Cache-Control: post-check=0, pre-check=0', FALSE); //NULLIFIES RAW DATA

header('Pragma: no-cache'); //GENERALLY FOR CROSS BROWSER COMPATIBILITY

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