Online PHP editor | refs for 4uI55

<?php function getClosest($search, $arr) { $closest = null; foreach($arr as $item) { if($closest == null || abs($search - $closest) > abs($item - $search)) { $closest = $item; } } return $closest; } $arr = array(0,5,10,15,20); $number = 15; echo getclosest($number,$arr);