3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $rounded = date('H:i:s', round(strtotime('16:47:34')/1800)*1800); echo $rounded;
based on qX5KZ
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
17:00:00