The Zend Developer Zone has posted the final part of their excerpts from the Manning Publishing book "PHP in Action" today with part three of the Design Patterns chapter.

You know you've been waiting for it, here it is. The final installment of Chapter 7 of PHP in Action by Dagfinn Reiersol. Without further comment, here's the introduction to this section in Dagfinn's own words: "In this section we discuss an Iterator and a Composite."

Dagfinn briefly mentions what the two patterns are about - a "canned loop" and making tree structures easy. Check out the PDF for the remainder of the chapter.