Summary
Hopefully, you have enjoyed the little examples of this chapter, because many more will follow! This chapter walked you through the technologies that live at the server side of a typical AJAX application. We have done a few exercises that involved simple server functionality, and PHP did a wonderful job at delivering that functionality. You have also learned the basics of working with databases, and simple database operations with the first table created in this book.
In the following chapters, you’ll meet even more interesting examples that use more advanced code to implement their functionality. In Chapter 4, you’ll build an AJAX-enabled form validation page, which is safe to work even if the client doesn’t support JavaScript and AJAX.
