Return value from function

[Michael Satterwhite]

I wanted to centralize connection to a MySQL database, so I created a
function that reads (eliminating extraneous)

function connectDB() {
$db = mysql_connect(-------);
mysql_select_db ("dbname");
return $db;
}

In my main routine I have

$db = connectDB();
----Database activity------
mysql_close($db );

Problem: I get an error message at this point telling me that this isn't a
valid mysql reference. Why? I'm probably overlooking it, but I don't see a
limitation on the return value in the documentation.