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freetds - Re: PHP, FreeTDS and SQL Server 7

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  • From: "David Derr" <david.derr AT milesmedia.com>
  • To: "'TDS Development Group'" <freetds AT franklin.oit.unc.edu>
  • Subject: Re: PHP, FreeTDS and SQL Server 7
  • Date: Thu, 18 Oct 2001 22:07:56 -0400


Brian,

I am not sure what changed between 0.51 and the later versions, but when
I tried 0.52 and 0.53pre1 I get seg faults on the apache child when I
try to make a database connection. My system is RedHat 6.2 connection
to a Win NT Server running SQL7.

Obviously I have not had a chance to test the configuration with these
later versions because of the seg faults ([Thu Oct 18 22:03:12 2001]
[notice] child pid 28386 exit signal Segmentation fault (11)). Can you
see anything I am doing wrong?

Here is my build script:

All done as root...
FREE TDS 0.53
/configure --prefix=/usr/local/freetds --with-tdsver=4.2
--enable-dbmfix
gmake
make install

edit /etc/profile adding:
export SYBASE=/usr/local/freetds

Add to /etc/ld.so.conf:
/usr/local/freetds/lib
Run ldconfig so that the libraries will be found by the linker


APACHE 1.3.14 (the following configuration options assume that php and
apache are in parallel directories)
/configure --prefix=/usr/local/apache_test


PHP 4.0.6
/configure --with-mysql --with-apache=../apache_1.3.14
--enable-track-vars --with-mssql=/usr/local/freetds
--with-sybase=/usr/local/freetds
--with-config-file-path=/usr/local/apache_test/conf
make
make install


APACHE 1.3.14
/configure --prefix=/usr/local/apache_test
--activate-module=src/modules/php4/libphp4.a
make
make install

Also add the above to the startup script that starts the web server.
SYBASE=/usr/local/freetds

Thanks,
David Derr

-----Original Message-----
From: bounce-freetds-137737 AT franklin.oit.unc.edu
[mailto:bounce-freetds-137737 AT franklin.oit.unc.edu] On Behalf Of Brian
Bruns
Sent: Thursday, October 18, 2001 12:46 PM
To: TDS Development Group
Subject: [freetds] Re: PHP, FreeTDS and SQL Server 7


There is a bug in 0.52 regarding the ip lookup that affects some
platforms. It is fixed in either 0.53pre1 or the CVS version.

Brian

On Thu, 18 Oct 2001, David Derr wrote:

> Hello. I am trying to use freetds in conjunction with php and MS SQL
> Server 7. I have posted a couple quiestions to the php mailing list,
> but have hit a wall there.
>
> I have included the reply I recieved to the first post and my second
> post below. I believe I have a configuration problem unrelated to php

> or the database because it seems freetds always wants to connect to
> 255.255.255.255 port 0 and that is not what I had in the interfaces
> file.
>
> Any help would be greatly appreciated. I am sooo close and I really
> hope this solution will perform better than our existing one which is
> using an ODBC bridge.
>
> Thanks!
> David Derr
>
>
> Posteded to the PHP General Mailing List...
>
> Thanks for you build record, that helped greatly, I think my main
> problem was using 0.52 instead of 0.51.
>
> No more seg faults now when I try to run my script, but I am still not

> getting a connection to the database, and I think the problem may be
> the fact the freetds is not finding any configuration information.
> Here is the php script I am running:
>
> <?
> putenv("TDSDUMP=/usr/local/apache_test/logs/tds.log");
>
> $nDBConn = mssql_connect("mmg", "username", "passwd");
> echo "ConnectID: $nDBConn<br>\n";
>
> $nStmt = mssql_query("select * from david_test", $nDBConn);
>
> while ($aRow = mssql_fetch_array($nStmt)) {
> echo $aRow["Name"];
> echo "<p>\n";
> }
>
> mssql_close($nDBConn);
> echo "hello dave";
> ?>
>
> And when this runs there are connection errors, but if I look in the
> TDSDUMP file I specified at the beginning of the script I see this
> (which is not the ip or port I specified in my interfaces file):
> 2001-10-17 09:39:24 Connecting addr 255.255.255.255 port 0
>
> Along with these errors in my Apache error log file:
> connect: Network is unreachable
> DB-Library: Login incorrect.
>
> Here is my interfaces file, located at /usr/local/freetds
> mmg
> query tcp tds4.2 ip.of.db.server 1433
>
> And last, here is the value of the SYBASE env variable:
> [root /root]# echo $SYBASE
> /usr/local/freetds
>
> Did you or anyone else run in to this problem? I looked in the config

> file to see if there was a path you could specify for the interfaces
> file but found only an alternate method of configuring freetds, so I
> renamed it to zzz_freetds.conf and still get the error message saying
> it is connecting to 255.255.255.255.
>
> Thanks again in advance for any help.
>
> David Derr
> davidderr AT britsys.net
>
>
> -----Original Message-----
> From: Nick Talbott [mailto:nickt AT powys.gov.uk]
> Sent: Tuesday, October 16, 2001 11:45 AM
> To: David Derr; php-general AT lists.php.net
> Subject: Re: [PHP] FreeTDS and SQL Server 7
>
> On Tuesday 16 October 2001 4:18 pm, David Derr wrote:
> > Hey all, I was reading an old article at php builder about
> > conntecting to SQL Server 7 on a Windows machine from a Linux
> > machine via FreeTDS.
> > (http://www.phpbuilder.com/columns/alberto20000919.php3)
> [snip]
> >
> > Has anyone had sucees in getting this to work? I will include my
> > config and compile commands below as well as the php script that is
> > breaking things.
> [snip]
>
> We have that working reliably with the exception that I have used TDS
> protocol version 4.2 rather than 7.0 because I had read that this was
a
> little less well developed, and 4.2 gives you all you need in any
case.
>
> We're using slightly different components: Apache 1.3.20, PHP 4.0.6,
> FreeTDS 0.51 running on a Slackware 8.0 base (Linux kernel 2.2.19 with

> glibc
> 2.2.3)
>
> I've attached an HTML file of our build record for this.
>
> The other thing to note is that this approach allows you to use PHP's
> mssql_ calls, but only those that have direct sybase_ equivalents. So

> make sure you
> check out which calls are common to both sets of functions and don't
try
> calls that only exist in the mssql_ function list.
>
> Regards
>
> Nick Talbott, IT Policy and Strategy Manager, Powys County Council
> email: nickt AT powys.gov.uk
> fax: 01597 824781
> web: www.powys.gov.uk and www.powysweb.co.uk
>
>
> ---
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