Chained drop down menu using PHP
I am trying to create 2 different drop down menus which are chained.
First drop down menu: options 1, 2, 3, and 4
Second drop down menu: options 1, 2, 3 and 4
However for the first drop down menu, if you choose the number then that number cannot be selected again on the second drop down menu. So if i pick 4 on the first drop down. then only 1, 2, and 3 should show up on the second drop down OR if you pick 4 on the second drop down it gives you an error saying you selected that value.
Here is the complicated part that I cannot figure out.
I want each drop down menus on two different pages and not on the same page. So after you select the submit button on the first drop down it should go to another page with the second drop down.. Has anyone seen this before. if you can give me some tips or show me how its done or even a webpage that has already implemented this i would appreciate it.