Saved as undefined

When I submit data through my website one particular field which is drop down field and has 4 values (5, 10, Fee, other) saves as "undefined"
I get no errors through the web site.
Field is varcharIs it a word "undefined" or a NULL? Do you have a check constraint on the field? Is there a default value preselected or it's blank on your web page?|||No not null saves the actual word "undefined" I have no constraints,there is no default value, I make a selection but it doesn't save that but saves and dispalys word "undefined"|||Either the driver that you use has some sort of translation built in (never heard of it), or your code contains a constant that is being used during parsing of your action query.