Render a variable during creation of anonymous PHP function

Question

I\'m trying to get a simple sort function going using anonymous functions. One each for asc and desc sorting.

Is it possible to render the $sortBy vari

Answer 1

You can pass a variable in enclosing scope using the use keyword (Example #3 Closures and scoping):

$sortBy = 'some_key';

$sort['desc'] = function($x, $y) use ($sortBy) {
    // implementation
};