title: PHP Facebook logout
body: <p>I am using <a href="https://github.com/facebook/php-graph-sdk" rel="nofollow noreferrer">PHP SDK</a> for creating facebook login, which works fine but when I want to logout and I use <a href="https://github.com/facebook/php-graph-sdk/blob/4aab0548d16749b41eb27d7e02b3872b1c9c24b1/src/Facebook/Helpers/FacebookRedirectLoginHelper.php#L156" rel="nofollow noreferrer">getLogoutUrl</a> method which returns logout url in this form:</p>
  
  <pre><code>https://www.facebook.com/logout?next=google.com&amp;access_token=my_access_token
  </code></pre>
  
  <p>After I redirect to this page I get to the <strong>This page is not avalible</strong> page on FB and I am not logged out. Any idea what could be wrong ? or it will be SDK bug ? thanks.</p>