使用 Facebook SDK for PHP 登录 Facebook
[英]Login with Facebook using Facebook SDK for PHP
原文
2012-10-23 14:02:37
1
1
php/
facebook-graph-api/
facebook-php-sdk/
facebook-login/
facebook-access-token
问题描述
I have problems with making login to my site with Facebook.
我在使用 Facebook 登录我的网站时遇到问题。
I have created login using Facebook SDK by following the tutorial at developers.facebook.com , but it does not work for me.我按照developers.facebook.com 上的教程使用Facebook SDK 创建了登录，但它对我不起作用。
I have wrote a simple test page to find out, what goes wrong.我写了一个简单的测试页面来找出问题所在。 This is the code:这是代码：
<!DOCTYPE html>
<html>
<head></head>
<body>
<pre>
<?php
$app_id = '446458238729594';
$app_secret = '********';
$redirect_uri = 'http://mysite.localhost/';
try {
echo( 'Including "facebook.php"...' );
require './src/facebook.php';
echo( "done.\n\n" );
echo( 'Starting session...' );
$result = session_start();
if( $result ) {
echo( "done.\n\n" );
echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
. "\n\n" );
} else {
echo( "fail.\n\n" );
echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
. "\n\n" );
}
echo( "Trying to get counter from the session...\n");
if( isset( $_SESSION['counter'] ) ) {
echo( 'Value: ' . $_SESSION['counter'] . "\n" );
echo( "Increasing to one...\n");
$_SESSION['counter']++;
echo( "done.\n" );
echo( 'Value: ' . $_SESSION['counter'] . "\n\n" );
} else {
echo( "fail.\n" );
echo( "Trying to add a counter and set it's value to 0...\n");
$_SESSION['counter'] = 0;
echo( 'Value: ' . $_SESSION['counter'] . "\n" );
echo( "done.\n\n" );
}
echo( 'Creating an instance of Facebook class...' );
$facebook = new Facebook(
array(
'appId' => $app_id,
'secret' => $app_secret,
)
);
echo( "done.\n\n" );
echo( "The instance of Facebook class:\n" . str_replace( $app_secret,
'>>>APP_SECRET<<<', var_export( $facebook, true ) ) . "\n\n" );
echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
. "\n\n" );
echo( 'Trying to get user ID...' );
$user_id = $facebook->getUser();
echo( "done.\n\n" );
echo( "User ID:\n" . var_export( $user_id, true ) . "\n\n" );
echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
. "\n\n" );
echo( 'Trying to get user profile info...' );
try {
$user_profile = $facebook->api( '/me' );
echo( "done.\n\n" );
echo( "User profile info:\n" . var_export( $user_profile, true )
. "\n\n" );
} catch( Exception $exception ) {
echo( "fail. Probably user is not logged in.\n\n" );
echo( "Exception:\n--------\n" . str_replace( $app_secret,
'>>>APP_SECRET<<<', var_export( $exception, true ) )
. "\n--------\n\n" );
$user_id = null;
echo( "User ID is now NULL.\n\n" );
}
echo( "\n=====>>>>> Session array:\n" . var_export( $_SESSION, true )
. "\n\n" );
if( $user ) {
echo( 'Seems like user is logged in. Getting logout url...' );
$url = $facebook->getLogoutUrl();
echo( "done.\n\n" );
} else {
echo( 'Seems like user is NOT logged in. Getting login url...' );
$url = $facebook->getLoginUrl(
array(
'scope' => 'read_stream, publish_stream, user_birthday,'
. ' user_location, user_work_history, user_hometown,'
. ' user_photos',
'redirect_uri' => $redirect_uri,
)
);
echo( "done.\n\n" );
}
echo( 'URL:<br></pre><a href=' . $url .">Login / Logout</a><pre>\n\n" );
echo( "\n=====>>>>> Session array:\n"
. var_export( $_SESSION, true ) . "\n\n" );
if( $user ) {
echo( 'Seems like user is still logged in. Trying to get some profile'
. ' info...' );
echo( "\nCreating request...\n" );
$queries = array(
array(
'method' => 'GET',
'relative_url' => '/' . $user,
),
array(
'method' => 'GET',
'relative_url' => '/' . $user . '/home?limit=50',
),
array(
'method' => 'GET',
'relative_url' => '/' . $user . '/friends',
),
array(
'method' => 'GET',
'relative_url' => '/' . $user . '/photos?limit=6',
),
);
echo( "Request:\n\n" . var_export( $queries, true ) . "\n\n" );
echo( "\nEncoding request using JSON format...\n" );
$queries_encoded = json_encode( $queries );
echo( "Encoded request:\n\n" . var_export( $queries_encoded, true )
. "\n\n" );
try {
echo( "\nTrying to get response...\n" );
$response = $facebook->api( '?batch=' . $queries_encoded, 'POST' );
echo( "Response:\n\n" . var_export( $response, true ) . "\n\n" );
echo( "\nTrying to decode response...\n" );
echo( "\n" . json_decode( $response[0]['body'], true ) . "\n" );
echo( "\n" . json_decode( $response[1]['body'], true ) . "\n" );
echo( "\n" . json_decode( $response[2]['body'], true ) . "\n" );
echo( "\n" . json_decode( $response[3]['body'], true ) . "\n" );
echo( "\n\ndone.\n\n" );
} catch( Exception $exception ) {
echo( "fail.\n\n" );
echo( "Exception:\n--------\n\n" . str_replace( $app_secret,
'>>>APP_SECRET<<<', var_export( $exception, true ) )
. "\n--------\n\n" );
}
} else {
echo( 'Seems like user is still NOT logged in. At now we can\'t do'
. ' anything. Try to login using the URL above.' );
}
echo( "\n\n========\n\nSession array:\n" . var_export( $_SESSION, true )
. "\n\n" );
} catch( Exception $exception ) {
echo( "\n\n\nAn exception have been trown:\n--------\n\n" . str_replace(
$app_secret, '>>>APP_SECRET<<<', var_export( $exception, true ) )
. "\n--------\n\n" );
echo( "\n\n========\n\nSession array:\n" . var_export( $_SESSION, true )
. "\n\n" );
}
?>
</pre>
</body>
</html>
After the first visit of this page (I am not logged in at Facebook), I get this output:第一次访问此页面后（我没有登录 Facebook），我得到以下输出：
Including "facebook.php"...done.
Starting session...done.
=====>>>>> Session array:
array (
)
Trying to get counter from the session...
fail.
Trying to add a counter and set it's value to 0...
Value: 0
done.
Creating an instance of Facebook class...done.
The instance of Facebook class:
Facebook::__set_state(array(
'sharedSessionID' => NULL,
'appId' => '446458238729594',
'appSecret' => '>>>APP_SECRET<<<',
'user' => NULL,
'signedRequest' => NULL,
'state' => NULL,
'accessToken' => NULL,
'fileUploadSupport' => false,
'trustForwarded' => false,
))
=====>>>>> Session array:
array (
'counter' => 0,
)
Trying to get user ID...done.
User ID:
0
=====>>>>> Session array:
array (
'counter' => 0,
)
Trying to get user profile info...fail. Probably user is not logged in.
Exception:
--------
FacebookApiException::__set_state(array(
'result' =>
array (
'error_code' => 7,
'error' =>
array (
'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
'type' => 'CurlException',
),
),
'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
'string' => '',
'code' => 7,
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 967,
'trace' =>
array (
0 =>
array (
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 899,
'function' => 'makeRequest',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => 'https://graph.facebook.com/me',
1 =>
array (
'method' => 'GET',
'access_token' => '446458238729594|>>>APP_SECRET<<<',
),
),
),
1 =>
array (
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 866,
'function' => '_oauthRequest',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => 'https://graph.facebook.com/me',
1 =>
array (
'method' => 'GET',
),
),
),
2 =>
array (
'function' => '_graph',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => '/me',
),
),
3 =>
array (
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 644,
'function' => 'call_user_func_array',
'args' =>
array (
0 =>
array (
0 =>
Facebook::__set_state(array(
'sharedSessionID' => NULL,
'appId' => '446458238729594',
'appSecret' => '>>>APP_SECRET<<<',
'user' => 0,
'signedRequest' => NULL,
'state' => NULL,
'accessToken' => '446458238729594|>>>APP_SECRET<<<',
'fileUploadSupport' => false,
'trustForwarded' => false,
)),
1 => '_graph',
),
1 =>
array (
0 => '/me',
),
),
),
4 =>
array (
'file' => '/srv/www/htdocs/mysite/web/index.php',
'line' => 69,
'function' => 'api',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => '/me',
),
),
),
'previous' => NULL,
))
--------
User ID is now NULL.
=====>>>>> Session array:
array (
'counter' => 0,
)
Seems like user is NOT logged in. Getting login url...done.
URL:
Login / Logout
=====>>>>> Session array:
array (
'counter' => 0,
'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)
Seems like user is still NOT logged in. At now we can't do anything. Try to login using the URL above.
========
Session array:
array (
'counter' => 0,
'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)
Then I try to login using the given URL.然后我尝试使用给定的 URL 登录。 It leads me to my Facebook app authorization page.它引导我进入我的 Facebook 应用授权页面。 After confirming the requested permissions, it redirects me to this URL:确认请求的权限后，它会将我重定向到此 URL：
http://mysite.localhost/?state=84260edcd60940884d261812496a488c&code=AQDkHPlXXweEiTjXg-sUXwwQAy0_xRYc89Opfz6AF9dlGOomCSG7fjf0440ctHuADKMEG4P7CheeNx9PnwUta-jkfpm03MjDCKyieOZpIPG-evlKYm64mRxD2Q5f_-HJROIC9I_-lHswr5RT3huSQySA55pD28b07Ouv87NqihZ1brGfU-_0LyhcdldtNikb-2xn6NRpa17xEmU37pBqDV1r#_=_
After that I expect that I am logged in and my page retrieves and shows me some info from my Facebook profile, but it doesn't.之后，我希望我已登录并且我的页面会从我的 Facebook 个人资料中检索并显示一些信息，但事实并非如此。 I get this output:我得到这个输出：
Including "facebook.php"...done.
Starting session...done.
=====>>>>> Session array:
array (
'counter' => 0,
'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)
Trying to get counter from the session...
Value: 0
Increasing to one...
done.
Value: 1
Creating an instance of Facebook class...done.
The instance of Facebook class:
Facebook::__set_state(array(
'sharedSessionID' => NULL,
'appId' => '446458238729594',
'appSecret' => '>>>APP_SECRET<<<',
'user' => NULL,
'signedRequest' => NULL,
'state' => '84260edcd60940884d261812496a488c',
'accessToken' => NULL,
'fileUploadSupport' => false,
'trustForwarded' => false,
))
=====>>>>> Session array:
array (
'counter' => 1,
'fb_446458238729594_state' => '84260edcd60940884d261812496a488c',
)
Trying to get user ID...done.
User ID:
0
=====>>>>> Session array:
array (
'counter' => 1,
)
Trying to get user profile info...fail. Probably user is not logged in.
Exception:
--------
FacebookApiException::__set_state(array(
'result' =>
array (
'error_code' => 7,
'error' =>
array (
'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
'type' => 'CurlException',
),
),
'message' => 'Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable',
'string' => '',
'code' => 7,
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 967,
'trace' =>
array (
0 =>
array (
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 899,
'function' => 'makeRequest',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => 'https://graph.facebook.com/me',
1 =>
array (
'method' => 'GET',
'access_token' => '446458238729594|>>>APP_SECRET<<<',
),
),
),
1 =>
array (
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 866,
'function' => '_oauthRequest',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => 'https://graph.facebook.com/me',
1 =>
array (
'method' => 'GET',
),
),
),
2 =>
array (
'function' => '_graph',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => '/me',
),
),
3 =>
array (
'file' => '/srv/www/htdocs/mysite/web/src/base_facebook.php',
'line' => 644,
'function' => 'call_user_func_array',
'args' =>
array (
0 =>
array (
0 =>
Facebook::__set_state(array(
'sharedSessionID' => NULL,
'appId' => '446458238729594',
'appSecret' => '>>>APP_SECRET<<<',
'user' => 0,
'signedRequest' => NULL,
'state' => NULL,
'accessToken' => '446458238729594|>>>APP_SECRET<<<',
'fileUploadSupport' => false,
'trustForwarded' => false,
)),
1 => '_graph',
),
1 =>
array (
0 => '/me',
),
),
),
4 =>
array (
'file' => '/srv/www/htdocs/mysite/web/index.php',
'line' => 69,
'function' => 'api',
'class' => 'BaseFacebook',
'type' => '->',
'args' =>
array (
0 => '/me',
),
),
),
'previous' => NULL,
))
--------
User ID is now NULL.
=====>>>>> Session array:
array (
'counter' => 1,
)
Seems like user is NOT logged in. Getting login url...done.
URL:
Login / Logout
=====>>>>> Session array:
array (
'counter' => 1,
'fb_446458238729594_state' => '6ae5ea9e5f7199fb6d19793905dcdd65',
)
Seems like user is still NOT logged in. At now we can't do anything. Try to login using the URL above.
========
Session array:
array (
'counter' => 1,
'fb_446458238729594_state' => '6ae5ea9e5f7199fb6d19793905dcdd65',
)
Please, help me figure out, why login does not work?请帮我弄清楚，为什么登录不起作用？ Why the instance of Facebook class does not retrieve the access token?为什么 Facebook 类的实例不检索访问令牌？ And why the method Facebook::getUser() always returns 0?为什么 Facebook::getUser() 方法总是返回 0？ How can I fix it?我该如何解决？
1 个解决方案
解决方案1
4 已采纳 2012-10-23 16:32:56
Going to take a stab here - so patience please: 要在这里采取刺 - 请耐心等待：
Possible cause 1: Your FB code looks good - but your error states: 可能原因1：您的FB代码看起来不错 - 但您的错误指出：
"Failed to connect to 2a03:2880:2050:1f01:face:b00c:0:2: Network is unreachable" which points to a cURL issue. “无法连接到2a03：2880：2050：1f01：face：b00c：0：2：网络无法访问”，这表示存在cURL问题。
Can you confirm your cURL is installed/working on your webserver? 您能否确认您的cURL已安装/正在您的网络服务器上？ A simple phpinfo(); 一个简单的phpinfo（）; will tell you. 会告诉你的。
Possible Cause 2: Check that your app URL is set to the location you are running the tests from. 可能的原因2：检查您的应用程序URL是否设置为您正在运行测试的位置。 Your redirect URI is "http://mysite.localhost/" - so make sure in your app setup page that it corresponds. 您的重定向URI是“http：//mysite.localhost/” - 因此请确保在您的应用设置页面中它对应。
Lastly, 最后，
simply start with the basics, and then start adding all your extra code in. This works for me: 只需从基础开始，然后开始添加所有额外的代码。这对我有用：
<?php
require 'src/facebook.php';
$facebook = new Facebook(array(
'appId' => 'xxxxxxxxxxxxxxxxxxx',
'secret' => 'xxxxxxxxxxxxxxxxxxx',
));
// See if there is a user from a cookie
$user = $facebook->getUser();
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
$logoutUrl = $facebook->getLogoutUrl();
} catch (FacebookApiException $e) {
echo '<pre>'.htmlspecialchars(print_r($e, true)).'</pre>';
$user = null;
$loginUrl = $facebook->getLoginUrl($params);
}
}
?>
<?php if ($user) { ?>
Your user profile is
<?php print htmlspecialchars(print_r($user_profile, true)) ?>
<a href="<?php echo $logoutUrl; ?>">Logout</a>
<?php } else { ?>
<a href="<?php echo $loginUrl; ?>">Login with Facebook</a>
<?php } ?>'
解决方案2
0 2022-01-31 03:47:13
Here you find the solution.在这里您可以找到解决方案。 Click below link Login with Facebook using PHP https://www.developerguidance.com/login-with-facebook-using-php/单击下面的链接使用 PHP 使用 Facebook 登录https://www.developerguidance.com/login-with-facebook-using-php/
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