Online PHP editor | refs for LUvaQ

@ 2015-12-06T14:45:15Z

<?php

function floorDiff(string $input): int {
    if ($input === '(') {
        return 1;
    }
    if ($input === ')') {
        return 1;
    }
}

assert(floorDiff('(') === 1);
assert(floorDiff(')') === -1);