3v4l.org

run code in 300+ PHP versions simultaneously
<?php $d = new DateTimeImmutable('2015-11-16'); $d2 = $d->setDate(1980, 10, 29); print $d2->format('c') . PHP_EOL; $d3 = $d2->modify('+1 day'); print $d3->format('c') . PHP_EOL; print $d->format('c') . PHP_EOL;
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1980-10-29T00:00:00+01:00 1980-10-30T00:00:00+01:00 2015-11-16T00:00:00+01:00
Output for 7.3.32 - 7.3.33, 8.0.13
1980-10-29T00:00:00+00:00 1980-10-30T00:00:00+00:00 2015-11-16T00:00:00+00:00

preferences:
247.72 ms | 401 KiB | 330 Q