PHP中多维数组的求和值

function sumArray($arr) {
    $sum = 0;
    foreach ($arr as $value) {
        if (is_array($value)) {
            $sum += sumArray($value); // 递归调用sumArray函数
        } else {
            $sum += $value;
        }
    }
    return $sum;
}

$arr = array(
    1,
    array(
        2,
        array(
            3,
            4
        )
    ),
    5
);

$result = sumArray($arr);
echo "多维数组的求和值为：" . $result;