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Bug #75227 You cannot change the session module's ini settings at this time
Submitted: 2017-09-19 13:50 UTC Modified: 2017-09-19 14:43 UTC
From: k dot michalak at kstudio dot pl Assigned:
Status: Not a bug Package: Session related
PHP Version: 7.2.0RC2 OS: Debian
Private report: No CVE-ID: None
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 [2017-09-19 13:50 UTC] k dot michalak at kstudio dot pl 
Description:
------------
We cannot change session settings after header send

Test script:
---------------
<?php

echo "OK";

ini_set('session.use_cookies', 0);


Expected result:
----------------
OK

Actual result:
--------------
OK
Warning: ini_set(): Headers already sent. You cannot change the session module's ini settings at this time in /home/test/test020.php on line 5

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 [2017-09-19 13:55 UTC] requinix@php.net
-Status: Open +Status: Feedback
 [2017-09-19 13:55 UTC] requinix@php.net 
That's right, you can't change session settings after headers have been sent.

Why do you think this is a bug?
 [2017-09-19 14:32 UTC] k dot michalak at kstudio dot pl 
But in php 7.0.22 thereis no problem
 [2017-09-19 14:43 UTC] requinix@php.net
-Status: Feedback +Status: Not a bug
 [2017-09-19 14:43 UTC] requinix@php.net 
The new error messages were added in relation to bug #71038.

There may not have been an error in 7.0.22 but the code would not have worked correctly: you simply cannot change most, if not all, session information after output has begun.
 
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