I'm looking for a way to display the node id somewhere on all displayed instances of a given content type. It doesn't need to happen in any particular way, but it would sure help my users to be able to see the node id, as we use it to track physical objects.
I would imagine that there are a couple of ways to do this, so if someone could outline the options that would also help.
I've tried something like
<?php $node_id = arg(1); echo($node_id); ?>
To no avail, as I can only put this in each individual node instead of all nodes for a given content type.