#48026 [NEW]: Session not always restored after redirect

From: scratch65535 at att dot net Operating system: W2KProSP4 PHP version: 5.2.9 PHP Bug Type: Session related Bug description: Session not always restored after redirect Description: ------------ If localhost/p1.php initiates a session before redirecting to 127.0.0.1/p2.php (or vice versa), the session data will be saved in p1 but not restored in p2; a new session will be started in p2. Only if the host references match literally ( both 'localhost' or both '127.0.0.1' ) will the session be restored. Reproduce code: --------------- Create 2 files, truncate sessions for a clean start ( I store sessions in a mysql db, and 'incSessions.inc' are the vanilla routines that support that) _t1.php: <?php define('cDocRoot',$_SERVER['DOCUMENT_ROOT'].'/') ; require_once( cDocRoot.'Global/incSessions.inc' ) ; session_start() ; $_SESSION['T1'] = session_id() ; header('Location: http://127.0.0.1/_t2.php') ; exit() ; ?> _t2.php: <?php define('cDocRoot',$_SERVER['DOCUMENT_ROOT'].'/') ; require_once( cDocRoot.'Global/incSessions.inc' ) ; session_start() ; $_SESSION['T2'] = session_id() ; var_dump($_SESSION) ; exit() ; ?> Type into the address line of your browser "127.0.0.1/_t1.php", and note that var_dump shows both 'T1' and 'T2' having been set. Inspect the sessions storage, note that only one session was created. Re-truncate sessions, and call _t1 as "localhost/_t1.php". Note that var_dump now shows only 'T2' having a value, and that inspection of the sessions storage shows 2 sessions rather than 1. Expected result: ---------------- I expected the session to be restored after the redirect regardless of how localhost was identified. Actual result: -------------- See above -- Edit bug report at http://bugs.php.net/?id=48026&edit=1 -- Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=48026&r=trysnapshot52 Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=48026&r=trysnapshot53 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=48026&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=48026&r=fixedcvs Fixed in CVS and need be documented: http://bugs.php.net/fix.php?id=48026&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=48026&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=48026&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=48026&r=needscript Try newer version: http://bugs.php.net/fix.php?id=48026&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=48026&r=support Expected behavior: http://bugs.php.net/fix.php?id=48026&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=48026&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=48026&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=48026&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48026&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=48026&r=dst IIS Stability: http://bugs.php.net/fix.php?id=48026&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=48026&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=48026&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=48026&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=48026&r=mysqlcfg