Count and sum multidimensional array php

There's an inbuilt function in PHP to count the sum of all the elements of an array. Here, this will give you your expected output :

<?php
    $arr = [[10, 20, 30, 40], [10, 20, 30], [10, 20, 30, 4]];
    // Let the magic happen...
    $yourArray = array_map(function ($el){ return ["sum" => array_sum($el), "count" => count($el)]; }, $arr);

    print_r($yourArray);
?>

I have thought about this, and came up with a solution (I think...), it comes in the form of a function and it goes like this:

function getSumAndCount(array $arr)
{
    $sum = 0;
    $count = 0;
    foreach ($arr as $v)
    {
        $count++;
        if (is_array($v))
        {
            $next = getSumAndCount($v);
            $count += $next['count'];
            $sum += $next['sum'];
        }
        else
        {
            !is_numeric($v) ?: $sum += $v;
        }
    }

    return [ 'sum' => $sum, 'count' => $count ];
}

It has a recursive check to if the array is multidimensional, checks if the value is numeric and sets the count and sum in a return array.

I haven't tested this properly as yet, but please test and let me know if you get the desired output.

EDIT
I will extend this to count dupe keys soon