3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(NAN); var_dump(var_export(NAN));
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.1, 7.0.3 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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
float(NAN) NANNULL
Output for 7.0.2
float(NAN) NAN.0NULL
preferences:
150.05 ms | 401 KiB | 183 Q