php 数组平均值

function calculateAverage($numbers) {
    if (empty($numbers)) {
        return 0; // 防止除以零的错误
    }
    
    $sum = array_sum($numbers); // 计算数组中所有数值的总和
    $count = count($numbers);   // 获取数组中元素的数量
    
    return $sum / $count;       // 返回平均值
}

// 示例使用
$numbers = [10, 20, 30, 40, 50];
echo "平均值是：" . calculateAverage($numbers); // 输出：平均值是：30

function calculateAverage($numbers) {
    $filteredNumbers = array_filter($numbers, 'is_numeric');
    
    if (empty($filteredNumbers)) {
        return 0;
    }
    
    $sum = array_sum($filteredNumbers);
    $count = count($filteredNumbers);
    
    return $sum / $count;
}