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Bug #80889 Cannot set save handler when session.save_handler is invalid
Submitted: 2021-03-19 11:41 UTC Modified: 2021-03-19 14:23 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: simon at podlipsky dot net Assigned: cmb (profile)
Status: Closed Package: Session related
PHP Version: 8.0.3, 7.4.16 OS: macos, debian
Private report: No CVE-ID: None
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From: simon at podlipsky dot net
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 [2021-03-19 11:41 UTC] simon at podlipsky dot net
Description:
------------
When `sesssion.save_handler` is set to something unknown eg. 

- 'whatever'
- 'memcached' when memcached is not installed
- Value that reports `Warning: ini_set(): Session save handler "XXX" cannot be found for calling `ini_set('session.save_handler', 'XXX');

Then calling `session_set_save_handler()` has no effect.

Test script:
---------------
Set `sesssion.save_handler` to 'whatever' in `php.ini`


```
<?php

$initHandler = ini_get('session.save_handler');

session_set_save_handler(new MyHandlerImpl());

$setHandler = ini_get('session.save_handler');


echo 'Init Handler is: ' . $initHandler . PHP_EOL;
echo 'Set Handler is: ' . $setHandler . PHP_EOL;
```

Expected result:
----------------
Init Handler is: whatever
Set Handler is: user

Actual result:
--------------
Init Handler is: whatever
Set Handler is: whatever

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History

AllCommentsChangesGit/SVN commitsRelated reports
 [2021-03-19 11:48 UTC] simon at podlipsky dot net
-PHP Version: 8.0.3 +PHP Version: 8.0.3, 7.4.16
 [2021-03-19 11:48 UTC] simon at podlipsky dot net
Reproduced on 7.4.16
 [2021-03-19 13:11 UTC] cmb@php.net
-Assigned To: +Assigned To: cmb
 [2021-03-19 14:23 UTC] cmb@php.net
-Status: Assigned +Status: Verified
 [2021-03-19 14:24 UTC] cmb@php.net
The following pull request has been associated:

Patch Name: Fix #80889: Cannot set save handler when save_handler is invalid
On GitHub:  https://github.com/php/php-src/pull/6788
Patch:      https://github.com/php/php-src/pull/6788.patch
 [2021-03-19 16:06 UTC] cmb@php.net
Automatic comment on behalf of cmbecker69@gmx.de
Revision: http://git.php.net/?p=php-src.git;a=commit;h=06bfada99bcff9bd2e3a5e959effa2237c07939b
Log: Fix #80889: Cannot set save handler when save_handler is invalid
 [2021-03-19 16:06 UTC] cmb@php.net
-Status: Verified +Status: Closed
 [2021-03-22 21:52 UTC] cmb@php.net
Automatic comment on behalf of cmbecker69@gmx.de
Revision: http://git.php.net/?p=php-src.git;a=commit;h=838951c2d6612efbf6adeb5b1abc7fced808dc39
Log: Fix #80889: amendment
 
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