A faithful port of .NET's LINQ library to PHP.

This library makes heavy use of anonymous functions, a feature introduced in PHP 5.3. As such, it requires PHP 5.3.0 or greater.

LINQ methods implemented:

• Aggregate()
• All()
• Any()
• Average()
• Cast()
• Concat()
• Contains()
• Count()
• DefaultIfEmpty()
• Distinct()
• ElementAt()
• ElementAtOrDefault()
• Except()
• First()
• FirstOrDefault()
• GroupBy()
• GroupJoin()
• Intersect()
• Join()
• Last()
• LastOrDefault()
• Max()
• Min()
• OfType()
• OrderBy()
• Reverse()
• Select()
• SelectMany()
• SequenceEqual()
• Single()
• SingleOrDefault()
• Skip()
• SkipWhile()
• Sum()
• Take()
• TakeWhile()
• ThenBy()
• ToArray()
• ToDictionary()
• Union()
• Where()
• Zip()

Extra methods:

• walk()

LINQ methods to be implemented:

None.

LINQ methods not implemented:

• AsEnumerable()
• AsParallel()
• AsQueryable()
• LongCount()
• OrderByDescending() - implemented as an optional argument to orderBy()
• ThenByDescending() - implemented as an optional argument to thenBy()
• ToList()
• ToLookup()