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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump((new \DateTime('+60000 seconds'))->format(DateTime::ATOM));
based on JPi3Y
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.1.1, 7.1.3 - 7.3.0rc3
string(25) "2017-07-06T08:52:21+02:00"
Output for 7.1.2
string(25) "2017-07-06T08:52:22+02:00"