php - pgsql connection

Hi,

 I know it's not a PHP3 mailinglist but the question is somewhat related
to pgsql.
 I would like to know what's the problem with following line: 
$dbConn = pg_Connect( "  host=$host  user=$user  password=$password port=$port dbname=$dbname");

 The php variables are filled with the appropriate values.
However, I always get the following error:

 Warning: Unable to connect to PostgresSQL server: connectDB() -- connect
() failed: Can't assign requested address Is the postmaster running (with
-i) at 'localhost' and accepting connections on TCP/IP port 'dbname='? in
/usr/users/szoli/public_html/guestbook.php3 on line 61

		Thanks in advance

--------------------------------------------------------------------------------
Sebestyén Zoltán 	I can't choose what I can't believe
					That the way of life is to live and grieve
MAKE INSTALL NOT WAR			'cause I see living as a place in the sun 
					and the world as a place for a kingdom to come
                                        
I use UNIX because reboots are for hardware upgrades.

                 Kick me! Whip me!! Make me develop on AIX!!!