In PHP/MySQL should I open multiple database connections or share 1?

Question

I am wanting to hear what others think about this? Currently, I make a mysql database connection inside of a header type file that is then included in the top of every page

Answer 1

Creating connections can be expensive (I don't have a reference for this statement as yet Edit: Aha! Here it is) so it seems as if the consensus is to use fewer connections. Using a single connection for all queries on a single page seems to be a better choice than multiple connections.