arr.php

<?php

if (!function_exists('arr_sum')) {
    /**
     * Replacement with bc math function for internal array_sum
     *
     * @param array $arr
     * @param int $scale
     *
     * @return mixed
     */
    function arr_sum(array $arr, int $scale = 2)
    {
        bcscale($scale);
        return array_reduce($arr, 'bcadd');
    }
}