3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 10100001; $b = 11101011; var_dump($a); var_dump($b); $b = $a ^ $b; $a = $a ^ $b; $b = $a ^ $b; var_dump($a, $b);

preferences:
60.4 ms | 402 KiB | 5 Q