在PHP中从多维数组中获取平均值

function getAverageFromMultiArray($array) {
    $sum = 0;
    $count = 0;

    foreach ($array as $element) {
        if (is_array($element)) {
            // 递归处理多维数组
            $sum += getAverageFromMultiArray($element);
            $count += count($element);
        } else {
            $sum += $element;
            $count++;
        }
    }

    return $sum / $count;
}

// 示例多维数组
$multiArray = array(
    array(1, 2, 3),
    array(4, 5, 6),
    array(7, 8, 9)
);

$average = getAverageFromMultiArray($multiArray);
echo "平均值：" . $average;