dynamodb getitem using php - I only want to retrieve the value - php

Question

I'm able to query my dynamodb tables, but I only want to retrieve the actual value. I don't want the formatting output. This same question has been answered here for Java, but I'm looking for the PHP solution:
Retrieving just the item value from a dynamodb table?
Here is my getitem query:
$response = $dynamodb->getItem(array(
"TableName" => $tableName,
"ConsistentRead" => true,
"Key" => array(
"userguid" => array(Type::STRING => $userguid)
),
"AttributesToGet" => array("token")
));
print_r($response["Item"]["token"]);
Here is the output:
Array
(
[S] => 9d194513
)
All I want to get back is:
9d194513
I assumed the logical answer would be to change the last line to:
print_r($response["Item"]["token"]["S"]);
But then my code doesn't return anything at all. Obviously still learning PHP here, and any help would be appreciated.

Answer 1

Don't use print_r function, just either echo your variables
echo $response["Item"]["token"]["S"];
or store in a variable for later use
$res_token = $response["Item"]["token"]["S"];

Answer 2

You can also use the getPath convenience method built into the Model object that the SDK returns for operations.
echo $response->getPath('Item/token/S');
For more information about working with responses in the SDK, see the Response Models page in the AWS SDK for PHP User Guide.

Answer 3

Though it's an old question but for anyone coming to this page for seeking answer, this is how I have done it.
getItem returns a Resultobject. You can call the get() function of the SDK, which will give you an array containing the exact value.
$params = [
"TableName" => "EpgApiAccessCount",
"Key" => $this->marshalJson('
{
"ApiUserKey": "' . $apiUserkey . '"
}
')
];
$result = $this->client->getitem($params);
if (!$result instanceof ResultInterface) {
return 0;
}
$item = $this->unmarshalItem($result->get("Item"));
return $item["AccessCount"];
Of course your value and table name will be different, and you can print or do anything else with the value.