我正在尝试允许用户通过Facebook在我的网络应用程序上注册。作为我正常注册的一部分,用户必须提供他们的电子邮件地址,我需要将其作为Facebook注册的一部分。
我正在使用下面的代码,它可以正常工作,但它不会返回用户电子邮件地址作为Facebook响应的一部分。我知道我需要专门“询问”电子邮件,但我在下面的代码中在哪里/如何做到这一点很困惑?
我也知道用户可能会选择不提供他们的电子邮件地址作为流程的一部分,但我能够处理。
// Grab our facebook details
$app_id = $this->config->item('fb_app_id');
$app_secret = $this->config->item('fb_secret_key');
$my_url = $this->config->item('fb_url');
session_start();
if(isset($_REQUEST["code"]))
{
$code = $_REQUEST["code"];
}
else
{
$_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection
$dialog_url = "https://www.facebook.com/dialog/oauth?client_id="
. $app_id . "&redirect_uri=" . urlencode($my_url) . "&state="
. $_SESSION['state'];
echo("<script> top.location.href='" . $dialog_url . "'</script>");
}
if ((isset($_REQUEST['state'])) && (($_REQUEST['state'] == $_SESSION['state'])))
{
$token_url = "https://graph.facebook.com/oauth/access_token?"
. "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
. "&client_secret=" . $app_secret . "&code=" . $code;
$response = file_get_contents($token_url);
$params = null;
parse_str($response, $params);
$graph_url = "https://graph.facebook.com/me?access_token=". $params['access_token'];
$user = json_decode(file_get_contents($graph_url));
if ( ! empty($user))
{
// NO EMAIL HERE?!
$email = strtolower($user->email);
}
}
答案 0 :(得分:2)
之前有人问过这个问题。答案可以在这里找到:
答案 1 :(得分:0)
这段代码对我有用......希望它也适合你
define('FACEBOOK_APP_ID','YOUR_APP_ID_HERE'); define('FACEBOOK_SECRET','YOUR_APP_SECRET_HERE');
// No need to change function body
function parse_signed_request($signed_request, $secret) {
list($encoded_sig, $payload) = explode('.', $signed_request, 2);
// decode the data
$sig = base64_url_decode($encoded_sig);
$data = json_decode(base64_url_decode($payload), true);
if (strtoupper($data['algorithm']) !== 'HMAC-SHA256') {
error_log('Unknown algorithm. Expected HMAC-SHA256');
return null;
}
// check sig
$expected_sig = hash_hmac('sha256', $payload, $secret, $raw = true);
if ($sig !== $expected_sig) {
error_log('Bad Signed JSON signature!');
return null;
}
return $data;
}
function base64_url_decode($input) {
return base64_decode(strtr($input, '-_', '+/'));
}
if ($_REQUEST) {
$response = parse_signed_request($_REQUEST['signed_request'],
FACEBOOK_SECRET);
/*
echo "<pre>";
print_r($response);
echo "</pre>"; // Uncomment this for printing the response Array
*/
$email = $response["registration"]["email"];