好的，所以我正在尝试使用ajax发布到facebook。问题是我没有登录。这是正在请求的页面。config只包含我的facebook应用程序身份验证详细信息。我想我只是不明白需要做什么——当我尝试用ajax做这个请求时，我尝试过的所有东西都返回了0（没有用户）。
<?php
require_once 'includes/config.php';
//Including facebook php sdk file
require_once 'includes/php-sdk/facebook.php';
//Creating our application instance
$facebook = new Facebook(array(
'appId' => APP_ID,
'secret' => APP_SECRET,
'cookie' => true
));
//Get User ID
$user = $facebook->getUser();
if ($user) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
$access_token = $facebook->getAccessToken();
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
//In order to post to the page later on we need to generate an Access Token for that page, to do this we get me-accounts in the following api call
$accounts = $facebook->api('/me/accounts');
}
看看https://github.com/facebook/facebook-php-sdk/blob/master/examples/example.php
上面写着
$facebook = new Facebook(array(
'appId' => '344617158898614',
'secret' => '6dc8ac871858b34798bc2488200e503d',
));
// 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) {
try {
// Proceed knowing you have a logged in user who's authenticated.
$user_profile = $facebook->api('/me');
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
}
// Login or logout url will be needed depending on current user state.
if ($user) {
$logoutUrl = $facebook->getLogoutUrl();
} else {
$loginUrl = $facebook->getLoginUrl();
}
尝试此代码，可能您从未使用API的facebook帐户登录（在本例中，我指的是代码的getLogoutUrl（）和getLoginUrl（）位），在这种情况下，您需要将用户引用到$loginUrl，例如：
header("location: $loginUrl");