postgresql connection management

I am running several web sites on one server, each of which connects to a different Postgresql database. I use some include files to load functions and classes. If I put pg_connect at the start of the include file, then sometimes I do not connect to the correct database from functions in a class. If I run echo pg_dbname(); in these functions I see that I am connected to the wrong database. Here are some possible fixes: 1: $swdbcon = pg_connect("host=localhost dbname=swgap user=postgres"); //at start of file global $swdbcon; // inside function $result = pg_query($swdbcon, $query); 2: if (pg_dbname() != "swgap") { //inside function

          pg_connect("host=localhost dbname=swgap user=postgres");

} 3: pg_connect("host=localhost dbname=swgap user=postgres"); inside function I have already written code that does not explicitly set the connection in each function and it worked fine. However, I find the problem occasionally as I change the code. What is the best way to get the proper connection inside functions? Jim -- James (Jim) B. White