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run code in 200+ php & hhvm versions
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<?php echo (new DateTime())->diff(DateTime::createFromFormat( 'Y-m-d H:i:s', '2017-06-26 09:11:28' ))->format('%hh %im');
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0alpha1
9h 29m