3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = 0b11011_11111; printf('%b', $a); print PHP_EOL; print decbin($a); print PHP_EOL;
Output for 8.2.31 - 8.2.33, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
1101111111 1101111111
preferences:
50.26 ms | 779 KiB | 4 Q