curl isnt returning any hotmail contacts - php

Question

I am trying to get my contacts from Hotmail. I made a script which used to work, but now it doesn't anymore. It does return a accesstoken, but no xml or json response. I am sure that I have the correct client-id and secret. I am using Google App Engine and even in the log of the Google App Engine Launcher no error appears, the console in my browser itself is also empty.
This is where I registered the application to get both the client id and secret: https://account.live.com/developers/applications/index
Hotmail development page:
oauth-hotmail.php:
<?php
//function for parsing the curl request
function curl_file_get_contents($url) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_AUTOREFERER, TRUE);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, TRUE);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}
$client_id = '000000004018D847';
$client_secret = 'CfhxxxxxxxxxxxxxxxNPE';
$redirect_uri = 'http://localhost:11080/oauth-hotmail.php';
$auth_code = $_GET["code"];
$urls_ = 'https://login.live.com/oauth20_authorize.srf?client_id='.$client_id.'&scope=wl.signin+wl.basic+wl.emails+wl.contacts_emails+wl.contacts_birthday+wl.contacts_postal_addresses+wl.contacts_phone_numbers
&response_type=code&redirect_uri='.$redirect_uri;
echo 'Contact From MSN';
$fields=array(
'code'=> urlencode($auth_code),
'client_id'=> urlencode($client_id),
'client_secret'=> urlencode($client_secret),
'redirect_uri'=> urlencode($redirect_uri),
'grant_type'=> urlencode('authorization_code')
);
$post = '';
foreach($fields as $key=>$value) { $post .= $key.'='.$value.'&'; }
$post = rtrim($post,'&');
$curl = curl_init();
curl_setopt($curl,CURLOPT_URL,'https://login.live.com/oauth20_token.srf');
curl_setopt($curl,CURLOPT_POST,5);
curl_setopt($curl,CURLOPT_POSTFIELDS,$post);
curl_setopt($curl, CURLOPT_RETURNTRANSFER,TRUE);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER,0);
$result = curl_exec($curl);
curl_close($curl);
echo $contents ;
$response = json_decode($result);
$accesstoken = $response->access_token;
//$accesstoken = $_SESSION['accesstoken'] ;//= $_GET['access_token'];
$url = 'https://apis.live.net/v5.0/me/contacts?access_token='.$accesstoken.'&limit='.$max_results;
$xmlresponse = curl_file_get_contents($url);
$contacts = json_decode($xmlresponse, true);
echo 'xmlresponse = '.$xmlresponse;
$return = array();
foreach($contacts['data'] as $contact)
{
$exploded = explode(".", $contact['id']);
$birthday = $contact['birth_day'].'-'.$contact['birth_month'];
if(!is_null($contact['phones']['personal'])){
$phoneNumber = $contact['phones']['personal'];
}elseif(!is_null($contact['phones']['mobile'])){
$phoneNumber = $contact['phones']['mobile'];
}elseif(!is_null($contact['phones']['business'])){
$phoneNumber = $contact['phones']['business'];
}else{
$phoneNumber = null;
}
$return[] = array (
'firstname'=> $contact['first_name'],
'lastname'=> $contact['last_name'],
'email' => $contact['emails']['preferred'],
'phoneNumber' => $phoneNumber,
'city' => $contact['addresses']['personal']['city'],
'street' => $contact['addresses']['personal']['street'],
'country' => $contact['addresses']['personal']['region'],
'birthday' => $birthday,
'id' => $exploded[1],
);
}
$hotmail_contacts = $return;
$hotmail_json = json_encode($return);
echo '<br><br><pre>';
echo $xmlresponse;
echo '</pre><br><br>';
?>
<table border='1' class="table table-striped table-condensed">
<thead>
<tr>
<th>Voornaam </th>
<th>Achternaam </th>
<th>Email </th>
<th>Telefoon </th>
<th>Stad </th>
<th>Adres </th>
<th>Land </th>
<th>Verjaardag </th>
<th>ID </th>
</tr>
</thead>
<tbody>
<?php
foreach ($hotmail_contacts as $contacts){
echo'<tr>';
echo'<td>'. $contacts['firstname']."</td>";
echo'<td>'. $contacts['lastname']."</td>";
echo'<td>'. $contacts['email'].'</td>';
echo'<td>'. $contacts['phoneNumber']."</td>";
echo'<td>'. $contacts['city'].'</td>';
echo'<td>'. $contacts['street']."</td>";
echo'<td>'. $contacts['country'].'</td>';
echo'<td>'. $contacts['birthday'].'</td>';
echo'<td>'. $contacts['id'].'</td>';
echo'</tr>';
}
?>
</tbody>
</table>
app.yaml:
application: famous-archway-127123
version: 1
runtime: php55
api_version: 1
handlers:
- url: /.*
script: oauth-hotmail.php
php.ini:
extension=php_curl.dll