Php – Connecting to MSSQL db (PDO, FreeTDS, ODBC)

I have an Ubuntu 12.04 server and I'm trying to establish a connection to a MSSQL database.

I've managed to connect using tsql and isql, but osql doesn't work and connecting with PHP using PDO also isn't working.. I will try to provide as much information as I can and if you need more just let me know and I will edit.

freetds.conf:

[MSSQL]
  host = TPSACC
  port = 54488
  tds version = 8.0

odbc.ini:

[MSSQL]
Description     = MS SQL connection to PRODUCTION database
Driver          = FreeTDS
Database        = PRODUCTION
Server          = TPSACC
UserName        = sa
Password        = pass
Trace           = No
TDS_Version     = 8.0
Port            = 54488

odbcinst.ini:

[FreeTDS]
Description = ODBC for Microsoft SQL
Driver      = /usr/local/lib/libtdsodbc.so
UsageCount  = 1
Threading   = 2

~> isql MSSQL sa pass

+---------------------------------------+
| Connected!                            |
|                                       |
| sql-statement                         |
| help [tablename]                      |
| quit                                  |
|                                       |
+---------------------------------------+
SQL> 

~> tsql -S MSSQL -U 'sa' -P 'pass'

locale is "en_US.UTF-8"
locale charset is "UTF-8"
using default charset "UTF-8"
1> 

~> osql -S MSSQL -U sa -P pass

checking shared odbc libraries linked to isql for default directories...
strings: '': No such file
    trying /tmp/sql ... no
    trying /tmp/sql ... no
    trying /etc ... OK
checking odbc.ini files
    reading /home/toolplas/.odbc.ini
[MSSQL] not found in /home/toolplas/.odbc.ini
    reading /etc/odbc.ini
[MSSQL] found in /etc/odbc.ini
found this section:
    [MSSQL]
    Description     = MS SQL connection to PRODUCTION database
    Driver          = FreeTDS
    Database        = PRODUCTION
    Server          = TPSACC
    UserName        = sa
    Password        = pass
    Trace           = No
    TDS_Version     = 8.0
    Port            = 54488
looking for driver for DSN [MSSQL] in /etc/odbc.ini
  found driver line: "  Driver          = FreeTDS"
  driver "FreeTDS" found for [MSSQL] in odbc.ini
found driver named "FreeTDS"
"FreeTDS" is not an executable file
looking for entry named [FreeTDS] in /etc/odbcinst.ini
  found driver line: "  Driver      = /usr/local/lib/libtdsodbc.so"
  found driver /usr/local/lib/libtdsodbc.so for [FreeTDS] in odbcinst.ini
/usr/local/lib/libtdsodbc.so is an executable file
"Server" found, not using freetds.conf
Server is "TPSACC"
osql: no IP address found for "TPSACC"

In PHP I have:

$conn = new PDO ("dblib:host=TPSACC;dbname=PRODUCTION","$username","$pw");

..or..

$conn = new PDO ("dblib:host=TPSACC;port=54488;dbname=PRODUCTION","$username","$pw");

And they both return this error:

SQLSTATE[HY000] Unable to connect: Adaptive Server is unavailable or does not exist (severity 9) 

I have been stuck here for a couple days and can't quite figure out why only half of the connections actually work..

Any and all help is really appreciated, thanks!