3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 0; var_dump($a | (1 << 1), $a | (1 << 1) | (1 << 1));
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(2) int(2)
preferences:
111.01 ms | 402 KiB | 89 Q