multiple entries for questionaire

I am trying to build an online questionaire in php. For the most part everything is straight forward but I have a questions that will have multiple answers and I don't know how to gather that and stick it into MySql. Problem Background: questionaire question: 3. Please indicate which places you have been to in the last 5 years: '96 '97 '98 '99 '00 Hawaii _1_ _2_ _3_ _4_ _5_ Guam _6_ _7_ _8_ _9_ _10_ Korea _11_ _12_ _13_ _14_ _15_ etc. The end users would be able to mark as many as are appropriate. I need to gather this data and put into a MySql database as follows: answer_id|Q_id |user_id |answer | 1 3 55 1 2 3 55 15 3 3 55 12 4 3 55 5 This way, I can track that the same user answered question 3 with four different answers (Hawaii'96, Korea'00, Korea'97, Hawaii'00). I am planning on using checkboxes on a web page for gathering the info. The Question: I need some kind of looping statement to gather this from the browser form and insert it into MySql. Can anyone point me to an example that I can get some ideas for doing this. Or, can someone lead me to the right PHP function to get started? Or is this just a stupid solution for this problem? Thank you in advance. rodney