PHP 4.0 Bug #9934 Updated: faulty dbmfetch()
| From: | sma_husain at hotmail dot com | Date: | Mon, 26 Mar 2001 15:47:49 +0000 |
| Subject: | PHP 4.0 Bug #9934 Updated: faulty dbmfetch() | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-49962@lists.php.net to get a copy of this message | ||
ID: 9934
User Update by: sma_husain@hotmail.com
Old-Status: Feedback
Status: Open
Bug Type: DBM/DBA related
Description: faulty dbmfetch()
Actually, dba is not really a replacement for dbm. dba requires special libraries to be installed in
a PHP server install. If an ISP has chosen to not install those, then dba does not work. Moreover,
on Windows platforms there are huge issues with installing dba libraries anyway. The PHP install
comes up with:
Warning: no such handler: db2
I have changed db2 to all other kinds of handlers (including gdbm) and have installed those also, in
addition to uncommenting the php_dba.dll include line in php.ini. Doesn't work.
Being deprecated is one thing, but not working is quite another. I would imagine deprecating
something implies it will no longer be found in a future version. But shouldn't it work for
now? The problem, as I said earlier, is that dbm is the natural fallback when all an ISP/Webhosting
platform offers is dbm. dba and other kinds of databases require a custom setup.
Thanks,
Amir
Previous Comments:
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[2001-03-23 08:35:32] sniper@php.net
Have you tried using the dba extension instead?
ie. change php_db.dll to php_dba.dll and check
the manual pages for dba extension how to use it:
http://www.php.net/dba
FYI: The db extension is deprecated.
--Jani
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[2001-03-22 12:30:43] sma_husain@hotmail.com
sample code:
<?
$db = dbmopen("test007","n");
dbminsert($db,"key1","data1");
dbminsert($db,"key2","data3");
dbminsert($db,"key2","data2");
print "n<br> Value here should be data1: ";
print dbmfetch($db,"key1");
print "n<br> Value here should be data2: ";
print dbmfetch($db,"key2");
print "n<br> Value here should be data3: ";
print dbmfetch($db,"key3");
dbmclose($db);
?>
here is the bug description:
don't even try using this function in php4.x on windows. it is extremely buggy; returns bad
data. typically, you will find the first character of inserted data missing, with some wierd chars
at the end. on examining the dbm file, it seems the php_dbm.dll methods are incorrectly reading data
by skipping the first character, reading the rest of the string and then getting completely messed
up because all following string length entries are "shifted".
i don't know how this huge bug has survived in all php 4.x implementations on windows. it
basically renders php 4.x on windows useless for disk based db access. i replaced my 4.x install
with 3.x and had no problem running my dbm code.
please somebody! fix this!
thanks,
amir
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Full Bug description available at: http://bugs.php.net/?id=9934