3v4l.org

run code in 500+ PHP versions simultaneously
<?php Var_dump(gettype(NAN));
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(6) "double"
preferences:
40.46 ms | 699 KiB | 4 Q