Re: [PHP] onChange

[snip]
I have 2 list fields in a form. The second is populated basing on
selection in field 1. Can anyone pls tell me how to do this in PHP ?
[/snip]

you can't, onchange is fired with javascript on the client. You have a
number of ways you can do it a few are.
1. have on change submit the form to a php page, grab the form variable
from the first drop down and build the second select box.
2. if the data set is small, output it all to the page as javascript
arrays, then onchange, rebuild the second drop down box.
3. take a look at
http://developer.apple.com/internet/...pt/iframe.html

these are just a few options.