I found this book to be fantastic for learning PHP, and an amazing hidden gem for All Oracle web apps.
The format of this book allows the experienced developer to go right to their area of weakness and get just the info they need for either PHP or Oracle web development. For beginners with either Oracle or PHP5, you're well served with this book alone. In particular I found the appendixes in the back a great way to learn how to develop ANY web application for oracle with examples in PHP. So an experienced PHP developer who's a deer in the headlights with databases will gain a solid understanding and real world skills.
Chapter 13 has an exhaustive look at writing a "real" database application using Oracle and PHP. Most books shy away from OCI connections, this one jumps right in and helps you understand not just the how, but the why.
You'll find this tackling of real world solutions repeated with things like handling LOBs. Again, most books do a simple case avoiding real world complications, this book attacks and conquers the details masterfully.
One VERY important point: This book applies php web development on ANY edition of Oracle, not just express. Instead it limits its scope to the foundations of the database that are included in the free Express edition, but all skills are equally relevant for standard and enterprise editions.