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.
I am not quite familiar with FileMaker Pro, but based from my research, it's a standalone app? We do not have a direct integration on it.
You can use our web based API to integrate your JotForm account, your forms and submission to your database or system. You can check our API page here: http://api.jotform.com/
If you want to send the submission data of your forms via POST method and fetch it on a PHP script and saved it on your MySQL database, then that is possible. Here's a guide about it: https://www.jotform.com/help/126-How-to-send-Submissions-to-Your-MySQL-Database-Using-PHP
I hope that helps.