Back in April, I gave a talk at the first PHP Dublin meetup at Engine Yard's Dublin office. The talk was on adding real-time functionality to existing PHP apps—a process I went through in building ThetaBoard. For a summary of the talks, checkout the write up by Stuart Butler of Logentries.
A month and a half later, I've finally gotten around to putting up my slides and example code from the talk. Hope someone finds it useful.