Bug #75350 [Com]: set session_name and use session_regenerate_id,session will lose.

Edit report at https://bugs.php.net/bug.php?id=75350&edit=1 ID: 75350 Comment by: tony at marston-home dot demon dot co dot uk Reported by: freeng at qq dot com Summary: set session_name and use session_regenerate_id,session will lose. Status: Not a bug Type: Bug Package: Session related Operating System: windows10 PHP Version: 7.1.10 Assigned To: cmb Block user comment: N Private report: N New Comment: Your problem is that you have more than one call to session_start(), and the second call fails just like the documentation says it should. If you have already used session_start() then you cannot call it again with calling session_write_close() beforehand. Your code should be as follows: session_start(); session_name('newname'); session_regenerate_id(); session_write_close(); session_start(); Previous Comments: ------------------------------------------------------------------------ [2017-10-10 11:03:58] requinix@php.net Exactly. You can change the session name in code but it's only temporary - PHP won't remember it for next time. You have to change it every time, and it has to be done before PHP tries to access the session data. ------------------------------------------------------------------------ [2017-10-10 10:58:54] freeng at qq dot com session auto start. the new name(cd) session tmp file,content is a|i:1; the ab session tmp file ,content is //(null) right value. so i looked http://php.net/manual/zh/function.session-name.php said ---- Thus, you need to call session_name() for every request (and before session_start() or session_register() are called). ---- so i turn auto start off, and run session_name('cd'); session_start();//$_SESSION=['a'=>1]; session_name('ab');//$_SESSION=[]; session_start();//$_SESSION=[]; it's ok. ------------------------------------------------------------------------ [2017-10-10 10:25:23] cmb@php.net Apparently, you didn't call session_start() ------------------------------------------------------------------------ [2017-10-10 10:18:25] freeng at qq dot com 1.set the different value by session_name() to the php.ini (normal when the same value) 2.execute session_regenerate_id(); 3.set some session value. 4.at new request,the value will lose ------------------------------------------------------------------------ [2017-10-10 10:16:28] freeng at qq dot com Description: ------------ --- From manual page: http://www.php.net/function.session-regenerate-id --- 1.set the different value by session_name() to the php.ini (normal when the same value) 2.set some session value. 3.at new request,the value will lose Test script: --------------- //php.ini session.name=ab; session_name('cd'); session_regenerate_id(); $_SESSION['a'] = 1; //current request $_SESSION=['a'=>1]; //new request $_SESSION=[]; ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75350&edit=1