Google API获取购买状态inap正在返回“；未找到”；

我引用了google play android api来检查应用内商品的购买和消费状态。但返回如下错误：

C:'Program Files'VertrigoServ'www'inapp'index.php:74:null Not Found

我不明白他为什么不给我返回一个无效的json，它只是给我返回了一条文本，说"找不到"

我用函数来getToken()，她工作得很完美。。。但是函数getStatusInapp($pProductIdStr, $lAccessToken)不工作

我做错了什么？

function getToken(){
GLOBAL $lPackageNameStr; // Name of package Name (com.example.app)
GLOBAL $client_id; // my client id from google
GLOBAL $client_secret; // my client secret from google
GLOBAL $refresh_token; // the refresh token
GLOBAL $pReceiptStr; // token of inap purchase
$url ="https://accounts.google.com/o/oauth2/token";
$fields = array(
   "client_id"=>$client_id,
   "client_secret"=>$client_secret,
   "refresh_token"=>$refresh_token,
   "grant_type"=>"refresh_token");
$ch = curl_init($url);
//set the url, number of POST vars, POST data
curl_setopt($ch, CURLOPT_POST,count($fields));
curl_setopt($ch, CURLOPT_POSTFIELDS, $fields);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
//execute post
$lResponse_json = (curl_exec($ch));
$lAccessToken = json_decode($lResponse_json)->{'access_token'};
//close connection
curl_close($ch);
return $lAccessToken;
}
function getStatusInapp($pProductIdStr, $lAccessToken){
GLOBAL $lPackageNameStr; // Name of package Name (com.example.app)
GLOBAL $client_id; // my client id from google
GLOBAL $client_secret; // my client secret from google
GLOBAL $refresh_token; // the refresh token
GLOBAL $pReceiptStr; // token of inaap purchase
/*
# What is the correct way to sku?
$pProductIdStr = "teste_01";
------------ or --------------
$pProductIdStr = "com.example.app.teste_01";
------------ or --------------
$pProductIdStr = "inap:com.example.app:teste_01";
# On Google Play Developer Console the sku is:> teste_01

*/
$lURLStr =  ("https://www.googleapis.com/androidpublisher/v2/applications/$lPackageNameStr/purchases/$pProductIdStr/purchases/$pReceiptStr");
$curl = curl_init($lURLStr);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); 
$curlheader[0] = "Authorization: Bearer " . $lAccessToken;
curl_setopt($curl, CURLOPT_HTTPHEADER, $curlheader);
$json_response = curl_exec($curl);
curl_close($curl);
//echo $json_response;
$responseObj = json_decode($json_response,true);
var_dump($responseObj);
echo $json_response;
}
/*
| Execute...
*/
getStatusInapp($pProductIdStr, getToken());