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通过使用PHP SDK的Facebook URL未加载

[英]Facebook URL by using php sdk is not loading

I use the following code to connect to the facebook via my site, but the facebook page is not loading. 我使用以下代码通过我的网站连接到Facebook,但是Facebook页面未加载。 The cook is like that 厨师就是那样

    <?php
require 'src/facebook.php';
$facebook = new Facebook(array(
  'appId'  => '198516340340394',
  'secret' => 'f11117b96e0996ecbf7d7f4919c0cf70',
  'cookie' => true
));
$user = $facebook->getUser();
$user_profile = null;
if ($user) {

try {
    $user_profile = $facebook->api('/me');
    $facebook->api('/me/feed/', 'post', array(
    'message' => 'I want to display this message on my wall'
));
  } catch (FacebookApiException $e) {
    error_log($e);
    $user = null;
  }

}

if ($user_profile) {
  $logoutUrl = $facebook->getLogoutUrl();
  echo '<a href="$logoutUrl">Logout</a>';
} else {
  $loginUrl = $facebook->getLoginUrl(array(
  'scope' => 'publish_stream, read_friendlists',
  ));
  echo '<a href="$logoutUrl">Login</a>';
}
?>

<html>
<head>
<title>PHP SDK</title>
</head>
<body>


</body>
</html>

and when I click on the login If you click on that login here it does not load the facebook 当我单击登录名时如果在此处单击该登录名,则不会加载Facebook

what should I do in this case 在这种情况下我该怎么办

You're outputting logoutUrl rather than loginUrl 您正在输出logoutUrl而不是loginUrl

Change: 更改:

echo '<a href="$logoutUrl">Login</a>';

to use 使用

echo '<a href="'.$loginURL.'">Login</a>';

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