I am trying to program a drop down menu which uses age to get query results, such as:
option 1: 0 to 6 months
option 2: 6 months to 1 year
option 3: 1 year ago
option 4: 2 years ago
etc.

From this selection, the php would then get results from database showing items manufactured in the selected time frame.

I am new to PHP. Any help would be greatly appreciated.