3v4l.org

run code in 500+ PHP versions simultaneously
<?php const C = [1, 2, 3]; function foo(): array { return C; } foo()[] = 4; var_dump(C);
Output for 8.2.31 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
array(3) { [0]=> int(1) [1]=> int(2) [2]=> int(3) }
preferences:
36.67 ms | 1136 KiB | 8 Q