3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump(false ?? 1); var_dump(true ?? 1); var_dump(null ?? 1);
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
bool(false) bool(true) int(1)
preferences:
48.86 ms | 478 KiB | 5 Q