Online PHP editor | output for ajAcS

<?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"=>"" ); $trimmedArray = array_map('trim', $arr); $filtered = array_filter($trimmedArray, function($var){return !empty($var);} ); print_r($filtered);