php 获取gmail 联系人邮箱，应用oauth2.0验证

1.  创建应用

https://code.google.com/apis/console/

设置相应的 应用名 转向URL地址

API Access下会得到

oauth2_client_id ， oauth2_client_secret ， oauth2_redirect_uri

2.  下载google 客户端工具 for php

https://developers.google.com/google-apps/tasks/downloads?hl=zh-CN

3.  然后设置 config.php

主要是配置

'oauth2_client_id' => '6644545content.com',
    'oauth2_client_secret' => 'ZJcFnO45452sB6hZGKCp3',
    'oauth2_redirect_uri' => 'http://e454545com/login/gmail/',

4.  程序代码如下

因为用google提供的例子只能获得到邮箱的用户名，得不到email地址，所以需要分两次取，然后再合并。

require_once ('BaseAction.php');
require_once ("../lib/google_lib/apiClient.php");

$client = new apiClient();
$client->setApplicationName('Engir');
$client->setScopes("http://www.google.com/m8/feeds/");
// Documentation: http://code.google.com/apis/gdata/docs/2.0/basics.html
// Visit https://code.google.com/apis/console?api=contacts to generate your
// oauth2_client_id, oauth2_client_secret, and register your oauth2_redirect_uri.
// $client->setClientId('insert_your_oauth2_client_id');
// $client->setClientSecret('insert_your_oauth2_client_secret');
// $client->setRedirectUri('insert_your_redirect_uri');
// $client->setDeveloperKey('insert_your_developer_key');

if (isset($_GET['code'])) {
  $client->authenticate();
  $_SESSION['token'] = $client->getAccessToken();
  $redirect = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
  header('Location: ' . filter_var($redirect, FILTER_SANITIZE_URL));
}

if (isset($_SESSION['token'])) {
 $client->setAccessToken($_SESSION['token']);
}

if (isset($_REQUEST['logout'])) {
  unset($_SESSION['token']);
  $client->revokeToken();
  header("location:".Config::ROOT_URL."/invites/gmail/");
}

if ($client->getAccessToken()) {
  $req = new apiHttpRequest("https://www.google.com/m8/feeds/contacts/default/full?max-results=100");
  $val = $client->getIo()->authenticatedRequest($req);
  // The contacts api only returns XML responses.
  $response = json_encode(simplexml_load_string($val->getResponseBody()));
  
  $nameArray = array();
  $responseArray = json_decode($response, true);
  if (isset($responseArray["entry"])){
  	$entry = $responseArray["entry"];
  	foreach ($entry as $item){
  		if(!is_array($item["title"])){
  			array_push($nameArray,$item["title"]);
  		}else {
  			array_push($nameArray,"##");
  		}
  	}
  }
  
  // The access token may have been updated lazily.
  $_SESSION['token'] = $client->getAccessToken();
  //print "
" . print_r(json_decode($response, true), true) . "
";
  //reading xml using SimpleXML
  $emailArray = array();
  $xml=  new SimpleXMLElement($val->getResponseBody());
  $xml->registerXPathNamespace('gd', 'http://schemas.google.com/g/2005');
  $result = $xml->xpath('//gd:email');
  foreach ($result as $title) {
  	 $email = $title->attributes()->address;
  	 if (!empty($email)){
  	 	 array_push($emailArray,$email."");
  	 }
  }
  $userArray = array();
  for ($i=0;$i

验证请求的URL地址是这样产生的

$client = new apiClient();
		$client->setApplicationName('Engir');
		$client->setScopes("http://www.google.com/m8/feeds/");
		$auth = $client->createAuthUrl();

参考URL:

1. https://developers.google.com/google-apps/contacts/v3/

2. http://lookmywebpage.com/api/google/import-gmail-or-google-contacts-using-php-and-oauth-2-0/