From form to an array

Is it possible to pass the values of a form directly into an array? I have a multi level, dynamic form. The first level (first form actually) askes how many levels there are and gives you a field to enter in that number. Then upon submit of form1 it creates a new form (form2) that contains 2 fields for each level (the number of levels was entered in form1). So if you entered 2 in the first form, you'd be given another form with 2 lines, each containing 2 fields. Ok, now on submit of this second form I want to take field1 from each line and put it into $array1 and field2 from each line and put it into $arrray2. Then pass those array's to a function as elements. Any idea how I can do this? Thanks, Jeff