400 Bad Request - facebook page tab

Question

I created app in facebook by this tutorial: https://developers.facebook.com/docs/appsonfacebook/pagetabs/ It's only page tab, so the page is loaded by iFrame, but facebook return this error:

"400 Bad Request

Your browser sent a request that this server could not understand." Any ideas ?

Answer 1

I had the same problem. It's becouse there is a POST request for your page instead of GET. You can solve it (well... kind of) by putting this PHP code in the very beggining of your page:

if ($_POST) {
   header("Location: " . $_SERVER['REQUEST_URI']);
   exit(); 
}