3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = new DateTime('today - 14 days'); $now = time(); var_dump($date->getTimestamp() - $now);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.25, 7.3.0 - 7.3.12, 7.4.0
int(-1243919)

preferences:
124.02 ms | 402 KiB | 188 Q