extract string from object array

Question

I have the following php:

$getlists = new CS_REST_Campaigns($_POST['campaign_id'], $auth);
$getlistsresult = $wrap->get_lists_and_segments();

if($getlistsresult->was_successful()) {

   echo '<pre>';
    var_dump($getlistsresult->response);
    echo '</pre>';
}

The above outputs:

 object(stdClass)#310 (2) {
  ["Lists"]=>
  array(1) {
    [0]=>
    object(stdClass)#309 (2) {
      ["ListID"]=>
      string(32) "xxxxxxxxxxxxxxxxxxxxxx"
      ["Name"]=>
      string(6) "List 1"
    }
  }
  ["Segments"]=>
  array(0) {
  }
}

How would i target / extract the ListID?

I have tried the following which doesnt return anything:

foreach($getlistsresult->response->Results as $entry) {
    echo $entry->ListID;
}

Answer 1

Looks like there's a mistake in your foreach:

foreach($getlistsresult->response->Lists as $entry) {
    echo $entry->ListID;
}