3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo (new \DateTimeImmutable)->format('Y_M_D_H_i_s');
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.3, 7.1.5 - 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
2018_Jan_Tue_12_51_13
Output for 7.3.32 - 7.3.33, 8.0.13
2018_Jan_Tue_11_51_13
Output for 7.1.4
2018_Jan_Tue_12_51_14

preferences:
193.08 ms | 401 KiB | 286 Q