If you have the time later today and want to listen in on some great PHP content, be sure to check out today's webcast from php|architect (as a part of the series leading up to CodeWorks 2009) on PHP and Windows integration from Sumit Chawla.
Using some of the technologies proposed by Microsoft to extend your PHP applications doesn't require a rip & replace approach. Sumit will present a series of projects (samples toolkits, frameworks and SDK) that enable PHP developers to easily extent their web applications.
Sumit will talk about technologies like Silverlight, SQL Server and Windows Azure. You can sign up for the webcast here (currently only Windows and OS X are supported by the GoToMeeting software).
If you'd like more information on the other webcasts in the series, you can see the full list here.