Unknown Host in pg_connect()

Hi,

I'm trying to connect to PostgreSQL using pg_connect:
$dbh = pg_connect("host=localhost, dbname=inventory, user=inventoryUser, password=secret");

However, I get an unknow host for localhost:
- - - Schnipp - - -
Warning: Unable to connect to PostgreSQL server: connectDBStart() --
unknown hostname: localhost
- - - Schnapp - - -

gethostbyname() has no problems to resolve localhost.

This is certainly an oversight on my part, but I couldn't find
anything in the books or in the FAQ.

tia,
Thorsten
--
Death to all fanatics!