Possible Duplicate:
Is closing the mysql connection important?
Edit - the above is not the same question and does not answer my question here. Here I speak specifically about the case that you DONT issue a query on the opened connection and I further ask what governs this closing, neither of which are addressed in the above answer.
If you use mysql_connect to connect to a database then don't issue a query on the database for a couple minutes, is the connection automatically closed? And if so, what governs this closing?
Thanks