Online PHP editor | refs for U5SK8

@ 2015-12-06T14:47:42Z

<?php

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

assert(floorDiff('(') === 1);
assert(floorDiff(')') === -1);
assert(floorDiff('()') === 0);