Online PHP editor | refs for 5r80U

<?php $arr = array( "mac_address"=>"989096e255a1", "status" =>"Known", "attributes" => array( "Owner"=>"rogue@wpi.edu", "IPAM-Hostname"=>"dresden.wpi.edu", "IPAM-AdminState"=>"OK", "IPAM-NAS-IP-Address"=>"", "IPAM-NAS-Port-ID"=>"", "IPAM-RADIUS-VLAN"=>"", "IPAM-TimeStamp"=>"2017-07-11 11:18:33 EDT", "Guest Role ID"=>"", "MAC-Auth Expiry"=>"", "Username"=>"", ), "Username"=>"", ); $filtered = array_filter($arr, function($var) {if(is_array($var)){return array_map('array_filter', $var);}else{return !empty($var);}} ); print_r($filtered);