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Building a Survey - where to hold/store temporary input data?

Hi, i am building a 40-70 questions survey. How should i store the user input? i want to do it in a way that if they are at question 10. They have the ability to go back to question 2 and modify the answer. Once they finish and submit the survey, all the user input will be deleted.

I have read the session user guide but it said it only can hold 4k??

Please light me up.

Thank You

4k is a lot of space for answers to questions. Store answers in an array

$data[70] = 'A';

You could also use a database to store the sessions in and then you have more space then 4K.

Or use PHP session instead of the codeignitor.

You could just not use a session, but use a database table to store each answer but don't set it as finished (ex..finished=0). Then use a session to store a key that is attached to the question rows for that user.

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