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- <?php
- /********************************************************
- include/icl.inc
-
- (C)Ryo Chijiiwa <Ryo@IlohaMail.org> 2002
-
- This file is part of IlohaMail, and released under GPL.
- See COPYING, or http://www.fsf.org/copyleft/gpl.html
-
- PURPOSE:
- Sets HTTP headers to disable cache if using non-Netscape browser
-
- ********************************************************/
- if (isset($HTTP_USER_AGENT)) $ua = $HTTP_USER_AGENT;
- else if (isset($_SERVER)) $ua = $_SERVER["HTTP_USER_AGENT"];
-
- $isns = stristr($ua, "Mozilla") && (!(stristr($ua, "compatible"))) && (!(stristr($ua, "Safari")));
- if (!$isns){
- header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past
- header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); // always modified
- header("Cache-Control: no-store, no-cache, must-revalidate"); // HTTP/1.1
- header("Cache-Control: post-check=0, pre-check=0", false);
- header("Pragma: no-cache"); // HTTP/1.0
- }
- ?>