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run code in 300+ PHP versions simultaneously
<?php $dateTime = new DateTime('0-01-01 00:00:00'); var_dump($dateTime->getTimestamp());
Output for 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
int(946681200)
Output for 7.3.32 - 7.3.33, 8.0.13
int(946684800)

preferences:
231.7 ms | 401 KiB | 283 Q