Achieving the $_POST variables

Hi, after submit a contact form 7, I want to use the $_POST variables to perform a php action. But I never get that far as ajax overrun the action. the $_POST variables are empty. I used the exact same manners two years on the older version of contact form 7, but now it doesn’t seem to be working.

Any tips how to solve it, as it’s important that I run a php script based on what the user enter in the contact form?

Thanks in advance.

Per

<?php

if($_POST)
// do something here
else { ?>
[contact-form 1 "Contact form 1"]
<?php } ?>