Closures and Mage::register

closures.php

<?php

#file: closures.php
require('app/Mage.php');
Mage::app();


//testing Mage::registry closure support

Mage::register('testing',function($v){
    return "hello $v world";
});

//fetch and exec
$func = Mage::registry('testing');
echo $func();
//=>"hello  world";
echo $func('philwinkle');
//=>"hello philwinkle world";