clear cache tag anyone??

daniel_a

I'm frequently updating images on my site. and some users have reported they are seeing old images where new ones should be...

I assume this is a caching issue.

does anyone know of some code I can put into my PHP to clear the cache from certain pages???

thanks.

mmilano

http://www.phpbuilder.com/board/showthread.php?s=&threadid=10206989

weird, same question. there is a good answer.

dc2_jspec

I too had a problem with this at one time while building a "make your own webpage" website. The user would upload a new image, but sometimes the new image would not display until the next time the user went to the page or until they clicked refresh. The best thing that I could do was add a ".rand=362793" to the end of the url. Where "?.rand=362793" is a random number generated everytime the page loads. This might help, or might not, but it couldn't hurt to try. Good luck

daniel_a

i used the following code with no luck
any ideas?

<?
// Date in the past.
HEADER("Expires: Mon, 1 Jul 2000 01:00:00 GMT");

HEADER("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");

HEADER("Cache-Control: no-store, no-cache, must-revalidate");
HEADER("Cache-Control: post-check=0, pre-check=0", false);

HEADER("Pragma: no-cache");
?>

theslinky

when you show/link you images do it this way:

basically have the PHP print a random number in place of NNNNNN and make sure you seed you rands:

mt_srand(time());

echo "<img src=\"myimage.gif?randFactor=" . mt_rand(100000, 999999) . "\">";

this always does the trick for me and i don't have to send any additional cache headers.

-sridhar