PostgreSQL pg_connection_status() bug?

I found some quite odd today and I am wondering if anyone else has encountered this (or can reproduce it) - or maybe I am just going crazy. The function pg_connection_status() should return PGSQL_CONNECTION_BAD or null if the PostgreSQL service/database has stopped/restarted/ is not responding - after you have connected to it. But what I encountered today suggests that is continues to return PGSQL_CONNECTION_OK after the stop / restart. It will only start returning PGSQL_CONNECTION_BAD if you try to run a query. For example - this is what I am experiencing: $link_id = pg_connect("dbname=test"); //do some queries ... etc ... // pg_connection_status($link_id) equals PGSQL_CONNECTION_OK; *** PostgreSQL database/service is stopped or restarted *** // pg_connection_status($link_id) still equals PGSQL_CONNECTION_OK; pg_query($link_id,$query); // this fails - outputs an error // pg_connection_status($link_id) now equals PGSQL_CONNECTION_BAD or null; Any comments or suggestions would be appreciated. Thanks. Scott