Select Tag php Code For Multiple Combination

See more:

HTML

PHP

MySQL

hello,

i have 2 select tag-country,state and 1 textbox city in my html page which are populated on page load from mysql database now when i when ever i want to edit the record i have a link of edit in my datatable which selectes the record and now i want that it should select proper country state and city.

For Example:
I have Country As Follows-
1.India
2.USA

State As Follows-
1.
Country ID 1
State Punjab

2.
Country ID 1
State J&K

3.
Country ID 2
State NJ

onchange of country i fill the state select tag

but when i select a record from a datatable i am able to select country but not able to fire onchange event

I know this is a very common question but after searching a lot i am posting this question i am new to PHP i have done this in dot net