Again, thanks Wrox for creating this forum for us.
I encountered an error and spent about three hours trying to resolve it before realizing it was my fault. I'm posting this here so that others might learn from the experience.
I downloaded the files related to the hidden frame GET example in the book. Everything worked fine. I decided to use them as the basis for some further learning so I copied them to a new directory under htdocs in the Apache http server directory. I tried running the application but data from the database did not display. Furthermore, in the lower right corner of my browswer, the "Unknown Zone (Mixed)" status appeared. I tried all sorts of solutions like messing with security settings within IE and the folders themselves, then I checked the Apache error log. It indicated a missing PHP file.
I copied the file to the new folder and the "Unknown Zone (Mixed)" status went away and everything worked fine.
- "Unknown Zone (Mixed)" status can be very misleading.
- Check your server logs early on in your troubleshooting process.
- Be smarter than me and make sure you have all needed files.
Hope everyone can learn something from this.