3v4l.org

run code in 300+ PHP versions simultaneously
<?php $bits64 = 64; $N64 = 0xfffffffffffffffe; $result = -( bcpow(2, $bits64) - $N64 ); echo $result,"\n"; echo bcpow(2,$bits64) , "\n",$N64;
Output for 7.0.2 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
-0 18446744073709551616 1.844674407371E+19
Output for 7.3.32 - 7.3.33, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function bcpow() in /in/UXMTv:5 Stack trace: #0 {main} thrown in /in/UXMTv on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.1
0 18446744073709551616 1.844674407371E+19
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function bcpow() in /in/UXMTv on line 5
Process exited with code 255.

preferences:
293.74 ms | 401 KiB | 457 Q