Online PHP editor | refs for nOHo9

<?php $items1 = array(new \stdClass()); $items2 = array(new \stdClass(), new \stdClass()); $items3 = array(new \stdClass(), new \stdClass(), new \stdClass()); function doCompare($a, $b){ return $a === $b; }; $udiff1 = array_udiff($items1, $items1, 'doCompare'); $udiff2 = array_udiff($items2, $items2, 'doCompare'); $udiff3 = array_udiff($items3, $items3, 'doCompare'); var_dump($udiff1, $udiff2, $udiff3);