On the [php]architect site today, they mention an introduction to PHP to the DCWebWomen group. They've shared the slides as well, and it's a good high level look at the language.

Last night, Sandy and I presented a short introduction to PHP for DCWebWomen. Our presentation covered the growth of the language over the last decade and introduced the audience to basic language concepts like variable types, arrays, and control structures. The audience had excellent questions and feedback throughout the talk. We were pleased to share some of what we’ve learned.

You can find the slides here - Intro to PHP (it's a PDF) and it covers both concepts a beginning developer needs to know and actual code examples of how they work.