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run code in 200+ php & hhvm versions
Bugs & Features
<?php echo date('Y-m-d H:i:s', strtotime('-1 hour 10 minutes')) . PHP_EOL; echo date('Y-m-d H:i:s', strtotime('-1 hour'));
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.1.7, 7.1.20 - 7.3.1
2017-07-13 21:15:05 2017-07-13 21:05:05
Output for 7.1.10

Process exited with code 137.