2603.php

<?php

// echo 'hello World';

function basicOp($op, $val1, $val2)
{
    $v1 = (int) $val1;
    var_dump($v1);

    $v2 = (int) $val2;
    var_dump($v2);

    return eval("return $val1 $op $val2;");
}

echo basicOp('*', 5, 7);

echo '<br>';
function countPositivesSumNegatives($Ary): array
{
    if (empty($Ary)) {
        return [];
    }
    
    $result = array_reduce($Ary, function($carry, $item) {
        if ($item > 0) {
            $carry[0]++;
        } else {
            $carry[1] += $item;
        }
        return $carry;
    }, [0, 0]);
    
    return $result;
}

// print_r(countPositivesSumNegatives([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, -11, -12, -13, -14, -15]));

print_r(countPositivesSumNegatives(null));

function countPositivesSumNegatives($Ary): array
{
    if (isset
    ($Ary) && count($Ary) > 0) {
        $pos = array_filter(array_map('checkPos', $Ary));
        $nag = array_filter(array_map('checkNag', $Ary));