3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = date ("d.m.Y", time() - ( -7 + 0 - 1) * 24*60*60); echo date("N");
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.13, 7.3.0 - 7.3.1
3
preferences:
133.64 ms | 403 KiB | 149 Q