php and mysql - avoiding cache -


i have problem 1 of users, make insert mysql database, when goes page list these inserts, return old data previous there. can see changes after several minutes or hours.

i read if add random number in url, can avoid cache, still not working.

i tried put these headers on php.

header("cache-control: private, no-store, no-cache, must-revalidate");  header("cache-control: post-check=0, pre-check=0", false); header("pragma: no-cache");

and tried 1 too:

select sql_no_cache...

none work. still don't visible changes.

try using expires headers in htaccess file. need ask user ctrl+f5 (force refresh) correctly take effect;

<ifmodule mod_expires.c>     expiresactive on     expiresbytype text/html "access plus 0 seconds" </ifmodule>

this tell browser not cache text , html within directory , subdirectories (unless otherwise specified). had similiar issue , resolved when realised caching affecting update of live data.


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