header ("Pragma: public");
header ("Cache-Control: no-store, max-age=0, no-cache, must-revalidate"); # HTTP/1.1
header ("Cache-Control: post-check=0, pre-check=0", false);
header ("Pragma: public");
header ("Cache-Control: no-store, max-age=0, no-cache, must-revalidate"); # HTTP/1.1
header ("Cache-Control: post-check=0, pre-check=0", false);