3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo date('Y-m-d 00:00:00', strtotime('first day of last month')). PHP_EOL; echo date('Y-m-d 23:59:59', strtotime('last day of last month')) . PHP_EOL;
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
2017-05-01 00:00:00 2017-05-31 23:59:59

preferences:
137.87 ms | 403 KiB | 183 Q