PHP Extract value from nested array and place in a loop to echo value

I'm trying to extract the virtual machine names that are being pulled from a vcenter server via the below SOAP requests. Whilst I'm getting the results (see the var_dump below), I can't figure out how to put a loop in to get the names as there are many embedded arrays and everything I try either returns an error or Array. I appreciate this is probably quite a simple one but i just can't figure it out.

It's the name value in the code extract below i'm trying to get.

$request->specSet = array (
                               'propSet' => array (
        array ('type' => 'VirtualMachine', 'all' => 0, 'pathSet' => array('name','runtime.powerState', 'config.hardware.numCPU', 'config.hardware.memoryMB')),
    ),

PHP Page

$ss1 = new soapvar(array ('name' => 'FolderTraversalSpec'), SOAP_ENC_OBJECT, null, null, 'selectSet', null);
$ss2 = new soapvar(array ('name' => 'DataCenterVMTraversalSpec'), SOAP_ENC_OBJECT, null, null, 'selectSet', null);
$a = array ('name' => 'FolderTraversalSpec', 'type' => 'Folder', 'path' => 'childEntity', 'skip' => false, $ss1, $ss2);
$ss = new soapvar(array ('name' => 'FolderTraversalSpec'), SOAP_ENC_OBJECT, null, null, 'selectSet', null);
$b = array ('name' => 'DataCenterVMTraversalSpec', 'type' => 'Datacenter', 'path' => 'vmFolder', 'skip' => false, $ss);
$res = null;
try
  {
    $request = new stdClass();
    $request->_this = $ret->propertyCollector;
    $request->specSet = array (
                               'propSet' => array (
        array ('type' => 'VirtualMachine', 'all' => 0, 'pathSet' => array('name','runtime.powerState', 'config.hardware.numCPU', 'config.hardware.memoryMB')),
    ),
    'objectSet' => array (
        'obj' => $ret->rootFolder,
        'skip' => false,
        'selectSet' => array (
            new soapvar($a, SOAP_ENC_OBJECT, 'TraversalSpec'),
            new soapvar($b, SOAP_ENC_OBJECT, 'TraversalSpec'),
            ),
        )
    );
     $res = $client->__soapCall('RetrieveProperties', array((array)$request));
   } 
catch (Exception $e)
    {
        echo $e->getMessage();
    }

Var_dump()

object(stdClass)#46 (1) {
  ["returnval"]=>
  array(2) {
    [0]=>
    object(stdClass)#47 (2) {
      ["obj"]=>
      object(stdClass)#48 (2) {
        ["_"]=>
    string(5) "vm-35"
    ["type"]=>
    string(14) "VirtualMachine"
  }
  ["propSet"]=>
  array(4) {
    [0]=>
    object(stdClass)#49 (2) {
      ["name"]=>
      string(24) "config.hardware.memoryMB"
      ["val"]=>
      int(128)
    }
    [1]=>
    object(stdClass)#50 (2) {
      ["name"]=>
      string(22) "config.hardware.numCPU"
      ["val"]=>
      int(1)
    }
    [2]=>
    object(stdClass)#51 (2) {
      ["name"]=>
      string(4) "name"
      ["val"]=>
      string(7) "test123"
    }
    [3]=>
    object(stdClass)#52 (2) {
      ["name"]=>
      string(18) "runtime.powerState"
      ["val"]=>
      string(10) "poweredOff"
    }
  }
}
[1]=>
object(stdClass)#53 (2) {
  ["obj"]=>
  object(stdClass)#54 (2) {
    ["_"]=>
    string(5) "vm-36"
    ["type"]=>
    string(14) "VirtualMachine"
  }
  ["propSet"]=>
  array(4) {
    [0]=>
    object(stdClass)#55 (2) {
      ["name"]=>
      string(24) "config.hardware.memoryMB"
      ["val"]=>
      int(128)
    }
    [1]=>
    object(stdClass)#56 (2) {
      ["name"]=>
      string(22) "config.hardware.numCPU"
      ["val"]=>
      int(1)
    }
    [2]=>
    object(stdClass)#57 (2) {
      ["name"]=>
      string(4) "name"
      ["val"]=>
      string(7) "test456"
    }
    [3]=>
    object(stdClass)#58 (2) {
      ["name"]=>
      string(18) "runtime.powerState"
      ["val"]=>
      string(10) "poweredOff"
        }
      }
    }
  }
}