Pchp.Library.Arrays.array_shift C# (CSharp) Method

        public static PhpValue array_shift(PhpArray array)
        {
            if (array == null)
            {
                //PhpException.ReferenceNull("array");
                //return null;
                throw new ArgumentNullException();
            }

            if (array.Count == 0) return PhpValue.Null;

            // dereferences result since the array doesn't do so:
            var result = array.RemoveFirst().Value;  // TODO: PhpVariable.Dereference

            // reindexes integer keys starting from zero:
            array.ReindexIntegers(0);
            array.RestartIntrinsicEnumerator();

            return result;
        }