我正在使用 Oauth 2.0 导入联系人，但我只得到电子邮件地址。有什么方法可以获取其他字段？另外，如何使用 Google API 创建联系人。只需要使用 PHP。
这是我的代码：
//setting parameters
$authcode= $_GET["code"];
$clientid='xxxxxxx';
$clientsecret='secret';
$redirecturi='validate.php';
$fields=array(
'code'=> urlencode($authcode),
'client_id'=> urlencode($clientid),
'client_secret'=> urlencode($clientsecret),
'redirect_uri'=> urlencode($redirecturi),
'grant_type'=> urlencode('authorization_code')
);
//url-ify the data for the POST
$fields_string='';
foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
$fields_string=rtrim($fields_string,'&');
//open connection
$ch = curl_init();
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL,'https://accounts.google.com/o/oauth2/token');
curl_setopt($ch,CURLOPT_POST,5);
curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
// Set so curl_exec returns the result instead of outputting it.
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
//to trust any ssl certificates
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
//execute post
$result = curl_exec($ch);
//close connection
curl_close($ch);
//extracting access_token from response string
$response= json_decode($result);
$accesstoken= $response->access_token;
//passing accesstoken to obtain contact details
$xmlresponse= file_get_contents('https://www.google.com/m8/feeds/contacts/default /full?oauth_token='.$accesstoken.'&max-results=5');
//reading xml using SimpleXML
$xml= new SimpleXMLElement($xmlresponse);
$xml->registerXPathNamespace('gd', 'http://schemas.google.com/g/2005');
$result = $xml->xpath('//gd:email');
foreach ($result as $title) {
$addrss=$title->attributes()->address;
echo $addrss."<br><br>";