html - Php caching and possible generation of static files -

im running website through basics of wordpress setup.

for reason pages/files being cached somewhere. haven't been able find static file generation example when log out user doesn't regonize cookies has been destroyed.

also updating stylesheet , core .php files may take few refresh before appearing on site.

i'v tried set filematch in .htaccess expiration date before present (i had 1998).

also tried inline php @ first line of .php files setup headers nocache information.

none of above has worked.

any suggestions or clues appreciated!