[英]Facebook PHP SDK - How to get access token?
我正试图从我的应用程序发布用户的Facebook墙。 用户授予应用程序的权限以在他的墙上发布,并且我在db中有userid。 我需要自动发送帖子,而无需用户再次登录。
我的代码是:
try{
require_once(dirname(__FILE__) . '\lib\facebook-php\src\facebook.php' );
}
catch(Exception $o){
print_r($o);
}
$config = array(
'appId' => '123456',
'secret' => '454544',
'allowSignedRequest' => false // optional but should be set to false for non-canvas apps
);
$facebook = new Facebook($config);
$user_id = $facebook->getUser();
$user_id = '123456';
if($user_id) {
// We have a user ID, so probably a logged in user.
// If not, we'll get an exception, which we handle below.
try {
$ret_obj = $facebook->api('/me/feed', 'POST',
array(
'access_token' => $facebook->getAccessToken(),
'link' => 'www.example.com',
'message' => 'Posting with the PHP SDK!'
));
echo '<pre>Post ID: ' . $ret_obj['id'] . '</pre>';
// Give the user a logout link
echo '<br /><a href="' . $facebook->getLogoutUrl() . '">logout</a>';
} catch(FacebookApiException $e) {
// If the user is logged out, you can have a
// user ID even though the access token is invalid.
// In this case, we'll get an exception, so we'll
// just ask the user to login again here.
var_dump($e);
$login_url = $facebook->getLoginUrl( array(
'scope' => 'publish_stream'
));
echo 'Please <a href="' . $login_url . '">login.</a>';
error_log($e->getType());
error_log($e->getMessage());
}
} else {
// No user, so print a link for the user to login
// To post to a user's wall, we need publish_stream permission
// We'll use the current URL as the redirect_uri, so we don't
// need to specify it here.
$login_url = $facebook->getLoginUrl( array( 'scope' => 'publish_stream' ) );
echo 'Please <a href="' . $login_url . '">login.</a>';
}
抛出An active access token must be used to query information about the current user.
错误并要求登录。 点击登录后,帖子会被发布。
如何在没有用户登录的情况下使用userid获取访问令牌?
当调用API端点/me
时,活动访问令牌不可用时会发生这种情况
有两种解决方案可以解决这个问题
使用userid而不是/ me
在发送api呼叫之前设置访问令牌
首先,您可以拨打电话
ret_obj = $facebook->api('/'.$user_id.'/feed', 'POST',
array(
'link' => 'www.example.com',
'message' => 'Posting with the PHP SDK!'
));
你不需要发送'access_token' => $facebook->getAccessToken(),
第二个选择是做
$access_token = $facebook->getAccessToken();
$facebook->setAccessToken($access_token);
ret_obj = $facebook->api('/me/feed', 'POST',
array(
'link' => 'www.example.com',
'message' => 'Posting with the PHP SDK!'
));
注意:必须在登录时发送publish_stream
范围
取消通知: publish_stream
被取代publish_actions
,检查Facebook的文档权限
你必须获得许可。 在这里查看
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