3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $startYear = 2014; $lastTaken = 2015; $recurrenceYears = 3; $nextRequirement = $lastTaken + ($recurrenceYears - (($lastTaken - $startYear) % $recurrenceYears)); var_dump(($lastTaken - $startYear) % $recurrenceYears); var_dump($nextRequirement);
based on nm6Pd
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
int(1) int(2017)
Output for hhvm-3.10.0

Process exited with code 153.