<?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"=>""
)
);
$filtered = array_filter($arr, function($var){return !isset($var);} );
print_r($filtered);
preferences:
35.1 ms | 402 KiB | 5 Q