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

        public static PhpValue array_search(PhpValue needle, PhpArray haystack, bool strict = false)
        {
            // result needn't to be deeply copied because it is a key of an array //

            if (haystack == null)
            {
                // TODO: PhpException.ArgumentNull("haystack");
                return PhpValue.False;
            }

            // using operator ===:
            if (strict)
            {
                using (var enumerator = haystack.GetFastEnumerator())
                    while (enumerator.MoveNext())
                    {
                        // TODO: dereferences value (because of StrictEquality operator):
                        if (needle.StrictEquals(enumerator.CurrentValue))
                            return PhpValue.Create(enumerator.CurrentKey);
                    }
            }
            else
            {
                // using operator ==:

                using (var enumerator = haystack.GetFastEnumerator())
                    while (enumerator.MoveNext())
                    {
                        // note: comparator manages references well:
                        if (needle.Equals(enumerator.CurrentValue))
                            return PhpValue.Create(enumerator.CurrentKey);
                    }
            }

            // not found:
            return PhpValue.False;
        }