3v4l.org

run code in 500+ PHP versions simultaneously
<?php json_encode([NAN]); http_build_query(['a'=>NAN]);
Output for 8.5.0 - 8.5.10
Warning: unexpected NAN value was coerced to string in /in/OmRkb on line 3
Output for 8.2.31 - 8.2.33, 8.3.0 - 8.3.33, 8.4.1 - 8.4.25
preferences:
41.28 ms | 782 KiB | 4 Q