3v4l.org

run code in 300+ PHP versions simultaneously
<?php $today = new DateTimeImmutable(); $one_year = new DateInterval('P1Y'); $last_year = $today->sub($one_year); $next_year = $today->add($one_year); echo $last_year->format('Y').' '.$today->format('Y').' '.$next_year->format('Y');
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
2019 2020 2021
preferences:
103.6 ms | 1667 KiB | 4 Q