On the Zend Developer Zone there's a recent post of an interview with Mike Pavlak, a Solutions Consultant and IBM Series i expert, as interviewed in a podcast by Kevin Schroeder of Zend.
In this podcast Mike talks a little bit about where he's come from, the history of PHP on the i and, what I think is most interesting, what it is that PHP developers can learn from the "old-school" RPG developers and vice versa.
Mike also talks about one of his favorite parts of his job - being able to go out and give talks and just being out in the communities (user groups, conferences, etc). You can listen to this interview via the in-page player for the post.