$dsn = 'odbc:host=xxx.xx.xxx.x;dbname=minhabase;port=99999DataSource:minhadatasource;';
    $user = 'usuario';
    $password = 'minhasenha';

    $pdo = new PDO($dsn, $user, $password);

extension=php_pdo_odbc.dll

'Default' => 'pgsql',

Extension = pdo_pgsql.so
Extension = pgsql.so