currying.php

<?php
require_once __DIR__ . '/../src/Verraes/Lambdalicious/load.php';

// non generic, only deals with functions with arity=2
function curry($f) {
    return function($x) use($f) {
        return function($y) use($f, $x) {
            return $f($x, $y);
        };
    };
}

$multiplyc = curry(multiply);
$multiplyBy5 = $multiplyc(5);
$final = $multiplyBy5(3);
assert(isequal(
        $final, 15
));