3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $t = new Datetime(); var_dump(DateTime::ISO8601);
based on pvuhX
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0beta1
string(13) "Y-m-d\TH:i:sO"