globals, simpletest and php from command line

["blackwater dev" <blackwaterdev@xxxxxxxxx>]

I have a php app that runs on php4.  I am writing some unit tests now using
SimpleTest but some of the libraries that I have to pull in for testing are
failing.  For example, my db library sets some params:

$dname="mydatabase";
$usr="me";
..etc

I then have some mysql functions that connect using

function con(){
 global $dname;
 ..etc.

}

When this is all run from the browser, things are fine but via simpletest
and command line, the globals are lost.  Is this just a problem with the
command line or with simpletest?

Thanks.