3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = ['x' => 1, 'y' => 1]; $a = ['x' => 1, 'z' => 2]; if (count(array_diff(array_merge($a, $b), array_intersect($a, $b))) === 0) { echo 'the same'; }
Output for 7.0.0 - 7.0.20, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

preferences:
202.01 ms | 403 KiB | 212 Q