PHP，计算多个项目的百分比 [英] Php, calculate percentage on multiple items

问题描述

我总共有5个项目，我想根据提交的[数据]计算百分比.结果将用于饼图.

I have 5 items in total, and I would like to calculate percentage based on [data] filed. The result will be used for pie chart.

Array
(
    [0] => Array
        (
            [label] => Item1
            [data] => 849
        )

    [1] => Array
        (
            [label] => Item2
            [data] => 657
        )

    [2] => Array
        (
            [label] => Item3
            [data] => 571
        )

    [3] => Array
        (
            [label] => Item4
            [data] => 538
        )

    [4] => Array
        (
            [label] => Item5
            [data] => 446
        )

)

使用:

(5/[data])*100

无法产生正确的结果，我不确定如何执行正确的计算.

does not produce correct result, and I'm not sure how to perform proper calculations.

推荐答案

我认为您想要对所有项目进行汇总以首先获得总金额，然后确定每个项目的百分比

I think what you want is to sum up all the items to get the total sum first and then determine the percentage of each item

$sum = array[0]['data'] + array[1]['data'] ...
$pc0 = array[0]['data'] / $sum * 100;
...

我将循环留给OP.

// 至于缺少更好的事情，这里是一个减少功能以获得总和:

// As for a lack of something better to do, here is a reduce function to get the sum:

$sum = array_reduce($data_array, function($v1, $v2){ return $v1 + $v2['data']; });

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