[PHP-DEV] Revise callback Psuedo-type to support new Closure class ?

[Nathan Nobbe]

Hi all,

I had a thought this morning and would like some feedback.  Don't you think
it would make sense to allow the callback psuedo-type to also allow the new
Closure class to be an acceptable data type?  A simple example that would be
nice to have working would be

<?php
$fClosure = function($val, $key) {
    echo "$key => $val" . PHP_EOL;
}

$aNumbers = array(5, 4, 3, 2, 1);

array_walk($aNumbers, $fClosure);
?>

Thoughts ?

-nathan