What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
It is possible to send the form submission to your own MySQL database using PHP. However, you will need to create a script that will serve as the landing page for the receiving post data. That script will insert the submitted post data to your MySQL database. Please refer to this guide: https://www.jotform.com/help/126-How-to-send-Submissions-to-Your-MySQL-Database-Using-PHP.
You might also want to check JotForm Webhooks. Here's the link: https://www.jotform.com/help/245-How-to-Setup-a-Webhook-with-JotForm.
You can find an example in this guide: https://www.jotform.com/help/248-Webhook-PHP-Script-Examples, please check the number 3 example.
Hope that helps. If you have any questions, let us know. Thank you.