如何找到或创建一个具有禁止相同答案功能的问卷？

Question

I need help. We need to find a questionnaire in which the answer to the question (for example, telephone number) may not be the same for two users. For Example:

Enter a phone number:

First the user enters a phone number: 123456789 And completes the survey.

The second user starts to question and answers the same phone number 123456789. He receives an error message or a request to enter a different answer.

Or is there any easy implementation of this problem using php or javascript.

Maybe it is possible to implement with surveymonkey api.

I would be glad of any help or advice.

Answer 1

Google forms writes to a spreadsheet database, allows regular expression fields and attached scripts. Set the field to mach your required format, then validate the response with a script.