22 Nov 2004: PHP 5 has been officially released for some time now. There are some changes that have been made since the book was published that may cause some of the examples to break (or seem to break - this is particularly true of the interaction of the new E_STRICT error level and the error-handling code included in the examples).
I've prepared a set of patch files that get the example code running under 5.0.2. (The XML-RPC bonus example is an exception to this at the moment.) These are not guaranteed to fix every possible incompatibility, but they deal with the main ones.
If you are interested in really catching all the changes, add these lines to the header.php file for any particular example: