Angularjs $http.post,将数组传递给PHP

myApp.factory('createGal',function ($http,$q)
{
    return {
        createGal: function ()
        {
            var deferred = $q.defer();
            var newGalleryArray = {};

            newGalleryArray.galleryName = 'New Image Gallery';
            newGalleryArray.client      = 245;

            $http.post('/beta/images/create',{newGalleryArray: newGalleryArray}).success(function(data)
            {
                console.log(data);
                deferred.resolve(data);
            });

            return deferred.promise;
        }
    };
});

PHP

public function create()
{
    print_r($_POST);
}

数组返回空.我错误地传递了数组吗？

Chrome Dev

谢谢