3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = 2004; if (($x % 400 == 0 || $x % 100 != 0) && $x % 4 == 0 ) { echo 'leap year'; }
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
leap year
preferences:
190.21 ms | 404 KiB | 243 Q