Creating and invoking an anonymous function in a single statement

Question

A php closure or anonymous function is used to create function without specifying its name.

Is it possible to call them without assigning to identifier as we do in J

Answer 1

PHP 7 added the ability to do this.

This code:

(function() { echo "This works as expected in PHP 7.\n"; })();

works as one would expect in PHP 7. (It still doesn't work in any PHP 5.x. release)