$data = [

    "resulterrorCode" => 0,

      "resultraw" => [

        "result" => "ok",

        "trace_id" => "Xdm00694540804871731h0",

        "code" => 0,

        "data" => [

              "id" => "tdm006945408048717384T",

        ],

        "description" => "成功",

        "info" => "Received push messages for 1 TOPIC"

    ],

];

echo "<pre>";

var_dump($data);

function getDeepValue($array, $keys, $delimiter = '.')

{

    $keys = explode($delimiter, $keys);

    $key = array_shift($keys);

    if (sizeof($keys) > 0 && isset($array[$key])) {

        return get_deep_value($array[$key], implode($delimiter, $keys), $delimiter);

    } else {

        return $array[$key] ?? null;

    }

}

$res = getDeepValue($data,'resultraw.data.id');

var_dump($res);