Description:
------------
if you print datetime variable with var_export function it will print extra precision digits with zeros. This behaviour is since version 5.6.x.





Test script:
---------------
php -r '$d=new DateTime("2016-06-07 12:37:40");var_export($d);echo "\n";'


Expected result:
----------------
DateTime::__set_state(array(
   'date' => '2016-06-07 12:37:40',
   'timezone_type' => 3,
   'timezone' => 'Europe/Berlin',
))

Actual result:
--------------
DateTime::__set_state(array(
   'date' => '2016-06-07 12:37:40.000000',
   'timezone_type' => 3,
   'timezone' => 'Europe/Berlin',
))