#49557 [NEW]: Assign $_SESSION to an empty array doesn't work

From: maxtjh at hotmail dot com Operating system: Windox XP SP2 PHP version: 5.2.10 PHP Bug Type: Session related Bug description: Assign $_SESSION to an empty array doesn't work Description: ------------ Output for Test.php Current SID: 1e2rcu3s63pv5r0m0omuckmmc6 $_SESSION => array(0) { } --------------------------------------… Output for Test.php?set=1 Current SID: 1e2rcu3s63pv5r0m0omuckmmc6 Session has been set with 'a' and 'b' $_SESSION => array(2) { ["a"]=> string(3) "aaa" ["b"]=> string(3) "bbb" } --------------------------------------… Output for Test.php?reset=1 Current SID: 1e2rcu3s63pv5r0m0omuckmmc6 Session has been set with empty array and new SID is regenerated. New sid: hathl18bl00gedoqeia2q6dq36 $_SESSION => array(0) { } --------------------------------------… After go throught these 3 URL, $_SESSION should be equal to empty array before regenarate new session id. But it get wrong here: Change current session id (hathl18bl00gedoqeia2q6dq36) with old session id (1e2rcu3s63pv5r0m0omuckmmc6) in cookie and enter Test.php without any get method. $_SESSION should be an empty array but it show this: Current SID: 1e2rcu3s63pv5r0m0omuckmmc6 $_SESSION => array(2) { ["a"]=> string(3) "aaa" ["b"]=> string(3) "bbb" } Reproduce code: --------------- session_start(); echo 'Current SID: '.session_id().'<br/>'; if(isset($_GET['set'])) { $_SESSION=array('a'=>'aaa','b'=>'bbb'); echo 'Session has been set with \'a\' and \'b\''.'<br/>'; } if(isset($_GET['reset'])) { $_SESSION=array(); session_regenerate_id(); echo 'Session has been set with empty array and new SID is regenerated.'.'<br/>'; echo 'New sid: '.session_id().'<br/>'; } echo '$_SESSION => '; echo var_dump($_SESSION).'<br/>'; Expected result: ---------------- Current SID: 1e2rcu3s63pv5r0m0omuckmmc6 $_SESSION => array(0) { } Actual result: -------------- Current SID: 1e2rcu3s63pv5r0m0omuckmmc6 $_SESSION => array(2) { ["a"]=> string(3) "aaa" ["b"]=> string(3) "bbb" } -- Edit bug report at http://bugs.php.net/?id=49557&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49557&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49557&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49557&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49557&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49557&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49557&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49557&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49557&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49557&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49557&r=support Expected behavior: http://bugs.php.net/fix.php?id=49557&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49557&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49557&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49557&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49557&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49557&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49557&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49557&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49557&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49557&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49557&r=mysqlcfg