Debian side: ii libsybdb5:amd64 0.91-2+deb7u1 amd64 libraries for connecting to MS SQL and Sybase SQL servers ii php5-sybase 5.4.4-14+deb7u7 amd64 Sybase / MS SQL Server module for php5
Windows side: Microsoft SQL Server 2008 R2 (SP2) - 10.50.4000.0 (X64) Jun 28 2012 08:36:30 Copyright (c) Microsoft Corporation Developer Edition (64-bit) on Windows NT 6.1 <X64> (Build 7601: Service Pack 1) <?php $hostname = "1.2.3.4"; $port = 1433; $dbname = "DWH"; $username = "USER"; $pw = "PASSWORD"; $dbh = new PDO ("dblib:host=$hostname:$port;dbname=$dbname","$username","$pw"); $stmt = $dbh->query("SELECT 2 + 3"); ?> Please, consider this bug critical because dblib is unusable..