3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 0x80; var_dump(base_convert($a, 16, 2),$a); $b = -$a; var_dump(base_convert($b, 16, 2), $b); printf("%b", $b); echo "\n"; $c = 100; $d = ~$c; var_dump($c,$d); echo $c + $d;
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(9) "100101000" int(128) string(9) "100101000" int(-128) 1111111111111111111111111111111111111111111111111111111110000000 int(100) int(-101) -1