3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $items = array(new \stdClass(), new \stdClass()); $copy = array(); foreach ($items as $item) { $copy[] = $item; } $udiff = array_udiff($items, $copy, function ($a, $b) { return $a === $b; }); var_dump($diff, $udiff, $items, $copy);
based on a2HNT