Okay I figured it out, I didn’t realize you need to do some silly stuff to get PHP to read headers from content-type json.
The solution was to use this code:
$json = file_get_contents(‘php://input’);
$myPostData .= print_r(json_decode($json, TRUE),true);
This creates an ugly string called $myPostData with the info in it. Hopefully this info helps someone else some day.