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Bug #5276 PHP 4.0.1: session_set_save_handler/session write fails
Submitted: 2000-06-29 20:46 UTC Modified: 2000-08-02 14:11 UTC
From: tep at sportbug dot net Assigned:
Status: Closed Package: Session related
PHP Version: 4.0.1 Release OS: RH 6.2 Linux
Private report: No CVE-ID: None
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From: tep at sportbug dot net
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 [2000-06-29 20:46 UTC] tep at sportbug dot net 
Using the session_set_save_handler to set call back functions for session managment.

The session write function does not get called instead the error message from line 495 in session.c is given in the php error log "Failed to write session data....."

The open and read callbacks are called and work.

The code (see below) worked in PHP 4.0.0

Notes:  using the default session settings in php.ini except for cookie_lifetime = gc_maxlifetime = 3600

Code:
Sample code from http://www.zend.com/manual/ref.session.php Example 2 (cut and paste)

except add the line:
session_register('foo');

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 [2000-06-29 21:12 UTC] tep at sportbug dot net 
The handlers starting working correctly by setting 
session.save_handler = user
in the php.ini file.

The code worked without it in PHP 4.0.0

Thanks go to Chris Adams for suppling the fix:
> Set session.save_handler = user in your php.ini. It took me a little create searching to find this
> from previous posts to this list. Arguably session_set_save_handler should either override this
> directly or none of the overridden calls should work. However, I have a feeling that by the time the
> write handler is called, PHP has already cleared out the temporary setting changes made by your
> script.
 [2000-06-29 21:38 UTC] tep at sportbug dot net 
session_set_save_handler should probably be fixed so that php.ini does not need to be modified or else better documentation?
 [2000-08-01 23:13 UTC] waldschrott@php.net 
Please verify that it?s still happening using the latest version of PHP (release 4.0.1pl2 or CVS).
 [2000-08-02 11:49 UTC] waldschrott@php.net 
ok., but did you try the latest version from CVS or just the lastest release, there have been some fixes which *might* be realted to your problem
 [2000-08-02 14:11 UTC] waldschrott@php.net 
should be fixed
 
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