PHP 5.4 bindable closures

gistfile1.aw

<?php
class Foo
{
    function barfoo()
    {
         return __FUNCTION__;
    }

    function bar()
    {
        return __FUNCTION__;
    }
}

$method  = 'bar';
$closure = function () use (&$method) { return $this->$method(); };

$c = Closure::bind($closure, new Foo);
echo $c(); //bar

$method = 'barfoo';
echo $c(); //barfoo

?>