使用Facebook SDK PHP登录-用户必须单击两次登录 [英] Login With Facebook SDK PHP - User Must Click Login Twice
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问题描述
我正在尝试使用PHP Facebook SDK来通过Facebook登录用户.
I am trying use the PHP Facebook SDK to log users in with facebook.
我首先使用了从GitHub下载的.zip中提供的示例文件.
I have started off by using the example file provided in the .zip I downloaded from GitHub.
当用户单击登录时，他们将进入身份验证页面.在允许我的应用程序之后，它们被重定向回原始页面，该页面应在该页面上打印用户对象.但事实并非如此.再次单击登录会跳过身份验证页面(因为用户已经允许了该应用程序)，然后打印该对象.
When users click login they are taken to the authentication page. After the allow my app they are redirected back to the original page where it should print_r the user object. But it does not. Clicking login again skips the authentication page (as the user has already allowed the app) and then the object is printed.
任何帮助将不胜感激.
<?php
/**
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
require '../src/facebook.php';
// Create our Application instance (replace this with your appId and secret).
$facebook = new Facebook(array(
'appId' => '1111111111',
'secret' => 'xxxxxxxxxxxxxxxxxxxxxxx'
));
// Get User ID
$user = $facebook->getUser();
// We may or may not have this data based on whether the user is logged in.
//
// If we have a $user id here, it means we know the user is logged into
// Facebook, but we don't know if the access token is valid. An access
// token is invalid if the user logged out of Facebook.
if ($user) {
echo '1 <br>';
try {
// Proceed knowing you have a logged in user who's authenticated.
echo '2 <br>';
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
echo '3 <br>';
error_log($e);
$user = null;
}
}
// Login or logout url will be needed depending on current user state.
if ($user) {
echo '4 <br>';
$logoutUrl = $facebook->getLogoutUrl();
} else {
echo '5 <br>';
$loginUrl = $facebook->getLoginUrl(array(
'scope' => 'email,read_stream,publish_stream',
'display' => 'touch'
));
}
// This call will always work since we are fetching public data.
$naitik = $facebook->api('/naitik');
?>
<!doctype html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<head>
<title>php-sdk</title>
<style>
body {
font-family: 'Lucida Grande', Verdana, Arial, sans-serif;
}
h1 a {
text-decoration: none;
color: #3b5998;
}
h1 a:hover {
text-decoration: underline;
}
</style>
</head>
<body>
<h1>php-sdk</h1>
<?php if ($user): ?>
<a href="<?php echo $logoutUrl; ?>">Logout</a>
<?php else: ?>
<div>
Login using OAuth 2.0 handled by the PHP SDK:
<a href="<?php echo $loginUrl; ?>">Login with Facebook</a>
</div>
<?php endif ?>
<h3>PHP Session</h3>
<pre><?php echo '6 <br>'; print_r($_SESSION); ?></pre>
<?php if ($user): ?>
<h3>You</h3>
<img src="https://graph.facebook.com/<?php echo $user; ?>/picture">
<h3>Your User Object (/me)</h3>
<pre><?php echo '7 <br>'; print_r($user_profile); ?></pre>
<?php else: ?>
<strong><em>You are not Connected.</em></strong>
<?php endif ?>
<h3>Public profile of Naitik</h3>
<img src="https://graph.facebook.com/naitik/picture">
<?php echo $naitik['name']; ?>
</body>
</html>
推荐答案
<div id="fb-root"></div>
<script src="//connect.facebook.net/en_US/all.js"></script>
<script>
window.fbAsyncInit = function() {
// init the FB JS SDK
FB.init({
appId : 'YOUR_APP_ID', // App ID from the App Dashboard
status : true, // check the login status upon init?
cookie : true, // set sessions cookies to allow your server to access the session?
xfbml : true // parse XFBML tags on this page?
});
FB.Event.subscribe('auth.login', function(response) {
window.location.href=window.location.href;
}
};
// Load the SDK's source Asynchronously
// Note that the debug version is being actively developed and might
// contain some type checks that are overly strict.
// Please report such bugs using the bugs tool.
(function(d, debug){
var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
if (d.getElementById(id)) {return;}
js = d.createElement('script'); js.id = id; js.async = true;
js.src = "//connect.facebook.net/en_US/all" + (debug ? "/debug" : "") + ".js";
ref.parentNode.insertBefore(js, ref);
}(document, /*debug*/ false));
</script>
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