multiple variable check

I have a form with 60 variables. I need a script that will check that they are all selected. It is a questionnaire.

I have it like this:

question 1 yes/no
question 2 yes/no
etc.

Now, I need to check if they selected an answer for every single question. If not, I need to tell them everything that they forgot to do (IE. answer Q1 and Q4). If they answered to all of the questions we can continue the script.

How can I do that? I cannot manage to do it properly.

Any help will be greatly appreciated!!!

 

you will need to pass form checkbox as array. Refer to this: php manual faq