Bug #78155 [NEW]: session_start doesn't create session

From: liangjian at oliveche dot com Operating system: CentOS 7 PHP version: 7.2.19 Package: Session related Bug Type: Bug Bug description:session_start doesn't create session Description: ------------ --- From manual page: https://php.net/function.session-start --- Request A and B are sent from the same browser at the same time (A prior to B) and use the same cookie. A destroys session and B writes session in sequence. B is blocked on 'session_start' and resumes after A destroys the session, but it does not create session or save the session variables. Test script: --------------- request A: session_start(); sleep(5); session_destroy(); request B: // B will be blocked by A on the session file session_start(); // !!!return ok but not session file!!! // resume until A destroys(releases) it. but no session file and the 'uid' cannot save. $_SESSION["uid"] = 1; Expected result: ---------------- The session file exists and session variable 'uid' is saved. Actual result: -------------- No session file. -- Edit bug report at https://bugs.php.net/bug.php?id=78155&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=78155&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=78155&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=78155&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=78155&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=78155&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=78155&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=78155&r=needscript Try newer version: https://bugs.php.net/fix.php?id=78155&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=78155&r=support Expected behavior: https://bugs.php.net/fix.php?id=78155&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=78155&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=78155&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=78155&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=78155&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=78155&r=dst IIS Stability: https://bugs.php.net/fix.php?id=78155&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=78155&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=78155&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=78155&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=78155&r=mysqlcfg