3v4l.org

run code in 300+ PHP versions simultaneously
<?php function craft_bomb() { $array = [1, [2, 3]]; $array[1][1] = &$array; return $array; } $bomb = craft_bomb(); $local = [1, [2, 3]]; $local[1][1] = &$local; var_dump($bomb); var_dump($local);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14
array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> *RECURSION* } } array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> *RECURSION* } }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> array(2) { [0]=> int(1) [1]=> *RECURSION* } } } array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> &array(2) { [0]=> int(1) [1]=> *RECURSION* } } }

preferences:
53.1 ms | 409 KiB | 5 Q