Posted by Ian Davies on 11/12/05 01:37

Hello
I have two drop down menus in my php script. The items displayed in the
second is dependent on which item is choosen from the first i.e. the choosen
item from the first filters the items in the second

first dropdown menu
sub no sub
1 science >>>>>>>>> if this is selected
2 maths
3 something else


second dropdown menu
TopicNo sub no TopicDesc
1 1 Science Topic1 >>>>>>>>>>>>>>>> displayed
2 2 Maths topic 1
3 3 Something else Topic1
4 1 Science topic 2>>>>>>>>>>>>>>>> displayed
5 2 Maths Topic 2
6 3 Something else topic 2

all others not displayed

The problem is this only works once when I open the page (with the default
values).
I would like to get the second dropdown box to update as soon as an Item is
selected from the first. I have searched the net but cannot find anything.
It seems that this is something that is not commonly done. The data for
populating the lists comes from a mysql database.

Does anyone know of a script to do this with php, or can direct me to a
suitable link?

Thanks
Ian

[Back to original message]