3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(NAN < 0); $x=NAN; var_dump($x < 0);
Output for 5.6.0 - 5.6.40, 7.0.23 - 7.0.33, 7.1.9 - 7.1.33, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
bool(false) bool(false)
Output for 7.0.0 - 7.0.22, 7.1.0 - 7.1.8
bool(true) bool(false)
preferences:
144.57 ms | 407 KiB | 5 Q