Description:
------------
odbc_* and PDO ODBC functions are each returning SQL integer values as PHP 
strings. However, SQL NULL values properly appear as PHP NULL values.

I have tested against multiple ODBC providers (FreeTDS and iSeries Access for 
Linux).


System:

SUSE Enterprise Linux Server 10 (SP2) - 32bit

Linux dev-webhost1 2.6.16.60-0.42.5-default #1 Mon Aug 24 09:41:41 UTC 2009 i686 
i686 i386 GNU/Linux

UnixODBC

PHP 5.3.6 from source

./configure  --with-apxs2=/usr/local/apache2/bin/apxs --with-
mssql=/usr/local/freetds --with-ldap --prefix=/usr/local/php5 --with-config-
file-
path=/usr/local/php5/etc --enable-sockets --enable-soap --with-openssl --with-
unixODBC=/usr --with-gd --with-jpeg-dir=/usr/lib --with-pdo-odbc=unixODBC,/usr


Test script:
---------------
1. odbc_* against FreeTDS to SQL Server 2008:

$odbc = odbc_connect('hpsql3','--censored--','--censored--');
$or = odbc_exec($odbc,'SELECT 1');
var_dump(odbc_fetch_array($or)); // array( string "1" )


2. odbc_* against iSeries Access for Linux to AS/400:

$odbc = odbc_connect('iSeriesDSN','--','--');
$or = odbc_exec($odbc,'SELECT 1 FROM SYSIBM.SYSDUMMY1');
var_dump(odbc_fetch_array($or)); // array( string "1" )


3. PDO against FreeTDS to SQL Server 2008

$pdo = new PDO('odbc:hpsql3','--','--');
var_dump($pdo->query('SELECT 1')->fetch(PDO::FETCH_ASSOC)); // array (string "1")


4. PDO against iSeries Access for Linux to AS/400

$pdo = new PDO('odbc:iSeriesDSN','--','--');
var_dump($pdo->query('SELECT 1 FROM SYSIBM.SYSDUMMY1')->fetch(PDO::FETCH_ASSOC)); // array (string "1")

Expected result:
----------------
I expect to get arrays containing (int) 1

Actual result:
--------------
I actually get arrays containing (string) "1"