3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = "\xff"; $s = gmp_export(unpack('c', $x)[1], 1); printf("In: %d, Out: %d\n", ord($x), ord($s));
Output for 5.6.8 - 5.6.20, 5.6.28, 7.0.0 - 7.0.5, 7.0.20, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
In: 255, Out: 1
Output for 7.0.6, 7.3.32 - 7.3.33, 7.4.33, 8.0.13
Fatal error: Uncaught Error: Call to undefined function gmp_export() in /in/gOENE:4 Stack trace: #0 {main} thrown in /in/gOENE on line 4
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.21
Fatal error: Call to undefined function gmp_export() in /in/gOENE on line 4
Process exited with code 255.
preferences:
147.61 ms | 408 KiB | 5 Q