<?php
var_dump($d = json_decode('
{"_index":"dwh","_type":"n/a","_id":"n/a","_version":1,"exists":true,"_source":{"cumulusId":2099411499044,"firstname":"Marcus","lastname":"Ficner","language":"1","sex":2,"email":"marcus.ficner@grandcentrix.net","salutation1":"Sehr geehrter Herr","salutation2":"Ficner","countryCode":"DE","code":"44137","residence":"Dortmund","birthday":"1982-12-15","address1":"","address2":"Steubenstraße 2","amountMonth":0.00,"amountPeriod":0.00,"pointsPeriod":23.000}}'));
echo $d->_source_cumulusId;
preferences:
52.03 ms | 402 KiB | 5 Q