Online PHP editor | refs for VTGsn

<?php $data='{"multicast_id":7917175795873320166,"success":6,"failure":0,"canonical_ids":4, "results":[ {"registration_id":"3","message_id":"m1"}, {"message_id":"m1"}, {"message_id":"m1"}, {"registration_id":"3","message_id":"m1"}, {"registration_id":"3","message_id":"m1"}, {"registration_id":"3","message_id":"m1"}]}'; $newData=json_decode($data); print_r(array_keys($newData->results));