3v4l.org

run code in 300+ PHP versions simultaneously
<?php $inf = INF; $p = pow(2.,64.); echo bcmod("$inf","$p"),"\n"; echo fmod(INF,pow(2.,64.)),"\n"; echo gmp_mod(INF,pow(2.,64.)),"\n";

preferences:
58.57 ms | 402 KiB | 5 Q