lambda

If lambdas are nothing more than nameless functions, then closures are little more than lambdas with a context.

And there's another language that most PHP developers already use that has an excellent implementation of lambdas and closures: JavaScript.

Two of the more exciting features of these languages are now available with PHP 5. 3: lambdas and closures.

Creating lambdas on the fly as parameters to functions and methods is lambda's primary use case.

You can store any Ruby object, even procs, lambdas, threads, continuations.

Oddly, our final version doesn't use lambdas at all!

Your applications can benefit from the use of lambdas and closures.

Perhaps the most common usage of lambdas is with STL sort.

I also plan to add support for database-backed sessions, which is currently missing, and make some enhancements to the request lambdas.

In functional programming, lambdas are referred to as first-class functions because they can be

But the real advantage to lambdas is when you create functions on the fly and no variable reference is required. For example