PHP: currying

gistfile1.php

<?php

//http://refectoryofajumblesale.wordpress.com/2013/06/04/currying-php/
$add = function($a, $b, $c) {
    return $a + $b + $c;
};

$add2 = curry($add, 2);

echo $add2(4, 5); 


function curry($fn, $arg, $obj = null) {
    return function() use ($fn, $arg, $obj) {
        $args = func_get_args();
        array_unshift($args, $arg);
        if($obj) {
            $fn = array($obj, $fn);
        }
        return call_user_func_array($fn, $args);
    };
}

thx, I included this into a snippet of highorder funcs: https://gist.github.com/coderofsalvation/b011bb0f6789044b4da1