3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [ //'foo' => [1], 'bar' => 5, ]; $b = [ //'foo' => [1], 'bar' => 6, ]; $i = array_diff($a, $b); $j = array_diff($b, $a); var_dump($i, $j);
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(1) { ["bar"]=> int(5) } array(1) { ["bar"]=> int(6) }
preferences:
252.89 ms | 404 KiB | 330 Q