new PDO("dblib:host={$hostname};dbname={$dbname}", $user, $pass);

SQLSTATE[01002] Adaptive Server connection failed (severity 9)

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

[hostname]
    host = ipaddress
    port = 1433
    tds version = 8.0

Version: freetds v0.91
         freetds.conf directory: /usr/local/Cellar/freetds/0.91/etc
 MS db-lib source compatibility: no
    Sybase binary compatibility: no
                  Thread safety: yes
                  iconv library: yes
                    TDS version: 7.1
                          iODBC: no
                       unixodbc: no
          SSPI "trusted" logins: no
                       Kerberos: no