Description:
------------
Closure::apply — Binds and calls the closure with an array of parameters

#Description
```
public mixed Closure::apply ( object $newthis [, array $param_arr ] )
```
Temporarily binds the closure to newthis, and calls it with any given array of parameters.

#Parameters
newthis
    The object to bind the closure to for the duration of the call.

param_arr
    The parameters to be passed to the callback, as an indexed array.

#Return Values
Returns the return value of the closure.

Test script:
---------------
$closure = function($name, $age) {
    return $name . ' is ' . $age . ' years old';
}

$closure->apply($three, ['Peter', 30]);

Expected result:
----------------
Peter is 30 years old