On the test.ical.ly blog there's a series of posts with Christian's "live blogging" from the phpDay event that just wrapped up in Verona, Italy:

In the first post he talks about the workshops for the first day from Sebastian Bergmann, Fabien Potencier or Paul Borgermans. He ended up attending Fabien's workshop and a talk on document conversion from Kore Nordmann and Tobias Schlitt.

In parts two and three he mentions other sessions he attended with topics ranging from Hadoop, Varnish, Git and testable code.

He wraps it all up with a summary post about the "five days of conferencing [that] have passed in what felt like only a few hours".