gistfile1.js

//factory
app.factory('dataLoad', function($http) {
    return {
        getData: function() {
            return $http.get('data-json.php');
        }
    }
});

//controller
    $scope.items = [];
    $scope.get = function () {
        var onSuccess = function (result) {
            $scope.items = result.data.items;
        }
        var onFail = function (result) {
            console.log(result.data);
        }
         dataLoad.getData().then(onSuccess, onFail);
    }