Backbone & Slim PHP - Access-Control-Allow-Headers - Can GET information, can't POST it?

Question

I\'m using Backbone and the Slim PHP framework. I\'m trying to post information to my API, however Access-Control-Allow-Headers keeps causing me problems...

My conso

Answer 1

I had a similar cross domain POST problem (in fact with all headers except GET). The following resolved it:

if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
    if (isset($_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD']) && (   
       $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'] == 'POST' || 
       $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'] == 'DELETE' || 
       $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_METHOD'] == 'PUT' )) {
             header('Access-Control-Allow-Origin: *');
             header("Access-Control-Allow-Credentials: true"); 
             header('Access-Control-Allow-Headers: X-Requested-With');
             header('Access-Control-Allow-Headers: Content-Type');
             header('Access-Control-Allow-Methods: POST, GET, OPTIONS, DELETE, PUT'); // http://stackoverflow.com/a/7605119/578667
             header('Access-Control-Max-Age: 86400'); 
      }
  exit;
}