Help Change header("Cache-Control: no-store, no-cache, must-revalidate");

[radus]

Hi,

 

In which index.php file ( they are in all directories ) should I change current

 

header("Cache-Control: no-store, no-cache, must-revalidate");

 

into

 

header("Cache-Control: private, must-revalidate");

 

to have it generated in all pages ?

 

Many thanks,