Online PHP editor | refs for BGM9A

<?php function compare2D($topic, $nomination): int { if (is_array($nomination)) { return in_array($topic, $nomination) ? 1 : 0; } if (is_array($topic)) { return in_array($nomination, $topic) ? 1 : 0; } return strcmp($topic, $nomination) === 0 ? 1 : 0; } $topic = ['SECURE', 'REMOTE', 'test3']; $arr = [['REMOTE', 'REMOTE_PREMIUM'], 'SECURE', ['test1', ['test2', 'test3']]]; $res = array_uintersect($topic, $arr, 'compare2D'); var_dump($res);