PHP计算显示平均值、五个最低值及五个最高值

柔光的暖阳◎ 2022-03-22 14:54 172阅读 0赞

$num_temp = "78, 60, 62, 68, 71, 68, 73, 85, 66, 64, 76, 63, 81, 76, 73,
    68, 72, 73, 75, 65, 74, 63, 67, 65, 64, 68, 73, 75, 79, 73";
    
    $temp_array = explode(',', $num_temp); //分割获取数组中的数值
    $tot_temp = 0; //定义一个初始变量
    $temp_array_length = count($temp_array); //计算数组中有几个数值
    
    foreach ($temp_array as $temp) {
        $tot_temp+= $temp;
    }
    
    $avg_high_temp = $tot_temp / $temp_array_length;
    echo "平均值为：" . $avg_high_temp . '<br >';
    
    sort($temp_array);
    
    echo "五个最低值：";
    for ($i = 0; $i < 5; $i++) {
        echo $temp_array[$i] . ", ";
    }
    echo '<br >';
    
    echo "五个最高值：";
    for ($i = ($temp_array_length - 5); $i < ($temp_array_length); $i++) {
        echo $temp_array[$i] . ", ";
    }

![20190128221757501.png][]

**相关函数：**

**explode()** 表示使用一个字符串分割另一个字符串

**count()** 表示计算数组中的单元数目，或对象中的属性个数

**sort()** 表示对数组进行排序。当本函数结束时数组单元将被从最低到最高重新安排

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[20190128221757501.png]: /images/20220322/0688c57ebb6246e6af6940236f147750.png
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