Req #49725 [Opn->Bgs]: session: Cache-Control header should not have post-check, pre-check

Edit report at http://bugs.php.net/bug.php?id=49725&edit=1 ID: 49725 Updated by: jani@php.net Reported by: sec dot wb at heysoft dot de Summary: session: Cache-Control header should not have post-check, pre-check -Status: Open +Status: Bogus Type: Feature/Change Request -Package: Feature/Change Request +Package: *General Issues Operating System: * PHP Version: 5.2.11 Block user comment: N Private report: N New Comment: You can disable it with session_cache_limiter( FALSE ); Previous Comments: ------------------------------------------------------------------------ [2009-09-30 18:31:45] sec dot wb at heysoft dot de In the description I copied the link twice, wanted to write: It says: "If both post-check and pre-check are specified and set to 0, both are entirely ignored" ------------------------------------------------------------------------ [2009-09-30 18:29:49] sec dot wb at heysoft dot de Description: ------------ function session_start causes php to send the following line: Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 This is quite stupid because no browser does care about "post-check=0, pre-check=0". IE will ignore it, as you can read here: http://blogs.msdn.com/ieinternals/archive/2009/07/20/Using-post_2D00_check-and-pre_2D00_check-cache-directives.aspx It says: "http://blogs.msdn.com/ieinternals/archive/2009/07/20/Using-post_2D00_check-and-pre_2D00_check-cache-directives.aspx" And apparently there even was a beta version of IE7 which did download all objects twice when "post-check=0, pre-check=0" was specified. So, I wonder why it is there in nearly each php page? Reproduce code: --------------- <?php // Start a session if(!defined('SESSION_STARTED')) { session_name('a_session_id'); @session_start(); define('SESSION_STARTED', true); } ?> Expected result: ---------------- No stupid cache control output Actual result: -------------- Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=49725&edit=1