AJAX, PHP, XML, and cascading drop-down lists
- by Dave Jarvis
What PHP libraries would you recommend to implement the following:
Three dependent drop-down lists
Three XML data sources
AJAX-based
Essentially, I'd like to create an XML database and wire up a form that allows the user to select three different dependent parameters:
User clicks Region
User clicks District (filtered by Region)
User clicks Station (filtered by District)
Even though I would like to use PHP and XML, the general problem is:
One XHTML form
Three dependent, cascading drop-down lists
Three flat files (no relational database) for the list data
The solution must be efficient, simple, reliable, and cross-browser.
What technologies would you recommend to solve the problem?
Thank you!
