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<?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 - 8.0.3
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 - 7.3.26, 7.4.0 - 7.4.13
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* } } }