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run code in 200+ php & hhvm versions
Bugs & Features
<?php $startYear = 2014; $lastTaken = 2014; $recurrenceYears = 3; $nextRequirement = $lastTaken+ (($lastTaken - $startYear) % $recurrenceYears); var_dump($nextRequirement);
based on TrBHS
Output for 4.3.0 - 7.2.0
int(2014)