Online PHP editor | refs for Qucpu

<?php $arr = array('test' => array('percy' => array('hello' => 'hatcherson'), 'percy' => array('mitchell', 'anderson'))); $allowed = array('test'); //$combined = array(); $combined = array_intersect_key($arr, array_flip($allowed)); foreach ($arr as $k => $v) { if (is_array($v)) { $combined[] = array_intersect_key($arr[$k], array_flip($allowed)); } } var_dump($combined);