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Bug #15664 dba_firstkey() isn't returning the first key
Submitted: 2002-02-21 14:18 UTC Modified: 2002-09-30 20:41 UTC
From: caperry at webofficenow dot com Assigned:
Status: Not a bug Package: DBM/DBA related
PHP Version: 4.1.1 OS: Linux
Private report: No CVE-ID: None
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From: caperry at webofficenow dot com
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 [2002-02-21 14:18 UTC] caperry at webofficenow dot com 
Using dba with the gdbm backend.  Creating a new database and inserting 10 values.  When I go to look at that database using a dba_firstkey() followed by a series of dba_nextkey() calls, I do not get back all the data.  If I ask for specific  keys that did not show up, they exist and have data.  Any ideas?

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 [2002-02-21 14:23 UTC] mrobinso@php.net 
Can you attach a short, concise snippet of code I
can use to reproduce this please?
 [2002-02-21 16:06 UTC] caperry at webofficenow dot com 
Well, it figures that after I open a bug I can't reproduce it.  8^) It does appear to be random, as we never see it in testing, but when the code is being pounded on by a few people at once, it's more frequent.  All the code I have is rather large and complicated.  I can give some senarios:

We use a GDBM file as a log for file transfers.  When clearing the log, we do a dba_firstkey and check if it's OKay to be deleted.  If it is, we delete the key and do a dba_firstkey again.  A lot of times the first few items are skipped this way.

We have another piece of code the pulls "big" (greater than 100 chars) values out of a database and puts 10 of them in a GDBM file.  Again, it occasionally skips the first one or two.  I have some example code, but as I said - it seems to work right now.
 [2002-09-30 20:41 UTC] iliaa@php.net 
Not enough information was provided for us to be able
to handle this bug. Please re-read the instructions at
http://bugs.php.net/how-to-report.php

If you can provide more information, feel free to add it
to this bug and change the status back to "Open".

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