Fabrik 3.8.1 has been released. It is mostly bug fixes and feature enhancements, but does include two new plugins (push notifications, and the sequence element). As usual we strongly recommend testing the new release on a sandbox if your application is mission critical, and always do an Akeeba backup before updating.
Days between 2 dates in PHP
This gives the difference in days between a date element and today, Alternatively you could swap 'today' with another date or field
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