Disable browser caching using a PHP header.

Simple :

// set expires header
header('Expires: Thu, 1 Jan 1970 00:00:00 GMT');

// set cache-control header
header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
header('Cache-Control: post-check=0, pre-check=0',false);

// set pragma header
header('Pragma: no-cache');

---------------------------------------------------------------

Pro :

// remove header
header_remove('ETag');
header_remove('Pragma');
header_remove('Cache-Control');
header_remove('Last-Modified');
header_remove('Expires');

// set header
header('Expires: Thu, 1 Jan 1970 00:00:00 GMT');
header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
header('Cache-Control: post-check=0, pre-check=0',false);
header('Pragma: no-cache');