Codeigniter PHP - 解析SOAP（WSDL）结果

I am currently retrieving information from a Web Service using:

$serviceData= new SoapClient('http://xxx.xxx.xxx.xx:xx/WebService/WebService.svc?wsdl');
$response = $serviceData->GetMyInformation();
var_dump($response);

The result from var_dump is below:

object(stdClass)#15 (1) 
{ ["GetDatabaseResult"]=> object(stdClass)#16 (1)
    { ["DatabaseInformation"]=> array(4) 

        {   [0]=> object(stdClass)#17 (2) 
            { ["DateCreated"]=> string(19) "2016-07-06T09:36:03" ["CurrencyCode"]=> string(3) "USD" } 

            [1]=> object(stdClass)#18 (2) 
            { ["DateCreated"]=> string(19) "2016-12-07T02:49:02" ["CurrencyCode"]=> string(3) "USD" } 

            [2]=> object(stdClass)#19 (2) 
            { ["DateCreated"]=> string(19) "2016-12-07T02:52:38" ["CurrencyCode"]=> string(3) "USD" } 

            [3]=> object(stdClass)#20 (2) 
            { ["DateCreated"]=> string(19) "2016-12-07T02:53:38" ["CurrencyCode"]=> string(3) "USD" }

        }
    }
}

What I need is a foreach loop that I can retrieve each key and value:

DateCreated: 2016-07-06T09:36:03
CurrencyCode: USD

I tried using json_encode($response) which removed the object(stdClass)#15 (1) and the json_dencode($response) which got it to this point:

array(1) 
{ ["GetDatabaseResult"]=> array(1) 
    { ["DatabaseInformation"]=> array(4) 
        {   [0]=> array(2) 
            { ["DateCreated"]=> string(19) "2016-07-06T09:36:03" ["CurrencyCode"]=> string(3) "USD" }

            [1]=> array(17) 
            { ["DateCreated"]=> string(19) "2016-12-07T02:49:02" ["CurrencyCode"]=> string(3) "USD" } 

            [2]=> array(17) 
            { ["DateCreated"]=> string(19) "2016-12-07T02:52:38" ["CurrencyCode"]=> string(3) "USD" }

            [3]=> array(17) 
            { ["DateCreated"]=> string(19) "2016-12-07T02:52:38" ["CurrencyCode"]=> string(3) "USD" }

        }
    }
}

I know it's a nested array, but how would I parse it?

No need for the encode/decode loop. Try this:

foreach($response->GetDatabaseResult->DatabaseInformation as $entry){
  error_log("Date Created: ".$entry->DateCreated."; Currency Code: ".$entry->CurrencyCode);
}