3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo time() - strtotime('2015-10-09 16:16:08');
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.6
-572373

preferences:
112.99 ms | 402 KiB | 130 Q