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Bug #34495 dba_fetch() fails with db4 driver when dba_popen() is used
Submitted: 2005-09-14 01:37 UTC Modified: 2005-12-08 20:41 UTC
From: pookey at pookey dot co dot uk Assigned: helly (profile)
Status: Closed Package: DBM/DBA related
PHP Version: 5CVS-2005-09-14 (snap) OS: Linux
Private report: No CVE-ID: None
View Developer Edit
 [2005-09-14 01:37 UTC] pookey at pookey dot co dot uk 
Description:
------------
 where the use of dba_open works, dba_popen does not.  
http://xian.ncuk.net/test/bug.php 
http://xian.ncuk.net/test/bug.phps 

Reproduce code:
---------------
  $file = dirname(__FILE__) . '/dbtest.db';

  $db = dba_open($file, "c", "db4");
  dba_insert('moo', 'baa', $db);
  $value = dba_fetch('moo', $db);
  echo "<b>non-persistant check:</b> $value <hr />";
  dba_sync($db);
  dba_close($db);
  
  $db = dba_popen($file, "c", "db4");
  $value = dba_fetch('moo', $db);
  echo "<b>persistant check:</b> $value <hr />";
  dba_close($db);
  

  $db = dba_open($file, "c", "db4");
  $value = dba_fetch('moo', $db);
  echo "<b>non-persistant check:</b> $value <hr />";
  dba_delete('moo', $db);
  dba_close($db);

Expected result:
----------------
all 3 echo statements ina bove should print 'baa'. 

Actual result:
--------------
the middle echo statement doesn't print baa

Patches

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 [2005-09-14 03:04 UTC] pookey at pookey dot co dot uk 
I've updated this page with a lot more information:  
http://xian.ncuk.net/test/bug.php  
  
It appears it's just db4 with the problem
 [2005-09-14 15:11 UTC] sniper@php.net 
RCS file: /repository/php-src/ext/dba/dba_db4.c,v
revision 1.10
date: 2003/06/21 18:16:38;  author: helly;  state: Exp;  lines: +4 -0
When persistent then we may use threads

Removing this part:

+       if (info->flags & DBA_PERSISTENT) {
+               gmode |= DB_THREAD;
+       }
+

Makes dba_fetch() work with db4 driver also if opened in persistent mode.
 [2005-09-14 15:45 UTC] pookey@php.net 
Thanks for the fix - should I add a note to php.net under 
dba_popen about this not working in pre-5.1 ?
 [2005-11-07 14:58 UTC] helly@php.net 
Please try this patch (against 5.1RC5-dev):
http://php.net/~helly/php/ext/dba/dba-db4-20051107.diff.txt
 [2005-11-15 01:00 UTC] php-bugs at lists dot php dot net 
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2005-12-08 20:41 UTC] helly@php.net 
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.
 
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