3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo 2 | 3 | 4, "\n\n"; echo '2: 0', decbin(2), "\n"; echo '3: 0', decbin(3), "\n"; echo '4: ', decbin(4), "\n"; echo '7: ', decbin(7), "\n";
Output for 8.1.7 - 8.1.34, 8.2.10 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
7 2: 010 3: 011 4: 100 7: 111
preferences:
65.89 ms | 848 KiB | 4 Q