PHP CSV 比较列

Question

我创建了一个 CSV，如下所示：

Name,Title,Salary,Bonus
Bob White,Manager,50000,1000
Mia Sparrow,Programmer,60000,1500
Steven Seagull,Programmer,58000,1400

然后是下面的代码：

<?php
$row = 1;
$data = [];
if (($handle = fopen("test.csv", "r")) !== FALSE) {
    while (($data[] = fgetcsv($handle)) !== FALSE) {
    }
    fclose($handle);
}
print_r($data);
?>

但不是这个输出：

[0] => Array
    (
        [0] => Name
        [1] => Title
        [2] => Salary
        [3] => Bonus
    )

[1] => Array
    (
        [0] => Bob White
        [1] => Manager
        [2] => 50000
        [3] => 1000
    )

[2] => Array
    (
        [0] => Mia Sparrow
        [1] => Programmer
        [2] => 60000
        [3] => 1500
    )

我在一行中得到所有内容：

Array ( [0] => Array ( [0] => ��NAME    TITLE   SALARY  BONUS ) [1] => Array ( [0] => BOB   MANAGER 50000   1000 ) [2] => Array ( [0] => MIA    PROGRAMMER  600001  1500 ) [3] => Array ( [0] => STEVEN PROGRAMMER 58000    1400 ) [4] => Array ( [0] => ) [5] => )

如何通过键将其拆分为数组以便我可以使用：

print_r(array_column($data,X));

打印我需要的列？

Answer 1

当您循环遍历数组时，只需将与 salary 和 bonus 对应的任何列相加，然后在最后输出总数。

如果你改变这个：

while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {

到：

$data = [];
while (($data[] = fgetcsv($handle, 1000, ",")) !== FALSE) {

你会在 $data 中得到文件的全部内容，然后你可以对其执行各种array operations。

[编辑]

好的，这就是我在第一部分中要讨论的内容。假设您的 .csv 文件如下所示：

Name,Title,Salary,Bonus
Bob White,Manager,50000,1000
Mia Sparrow,Programmer,60000,1500
Steven Seagull,Programmer,58000,1400

现在，这将为您提供奖金和薪水列的总和，并将它们相加为总和：

const SALARY = 2;
const BONUS  = 3;

$salary = 0;
$bonus  = 0;

$row = 1;
if (($handle = fopen("test.csv", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
      $salary+= $data[SALARY];
      $bonus+=  $data[BONUS];
    }
    fclose($handle);
    echo "Totals: ".$salary."+".$bonus." = ".($salary + $bonus);
}

如果你想对你的数据做一些其他的操作，你可以把整个东西存储在一个数组中，像这样：

$row = 1;
$data = [];
if (($handle = fopen("test.csv", "r")) !== FALSE) {
    while (($data[] = fgetcsv($handle)) !== FALSE) {
    }
    fclose($handle);
}

现在，print_r($data); 会给你这个：

Array
(
    [0] => Array
        (
            [0] => Name
            [1] => Title
            [2] => Salary
            [3] => Bonus
        )

    [1] => Array
        (
            [0] => Bob White
            [1] => Manager
            [2] => 50000
            [3] => 1000
        )

    [2] => Array
        (
            [0] => Mia Sparrow
            [1] => Programmer
            [2] => 60000
            [3] => 1500
        )

    [3] => Array
        (
            [0] => Steven Seagull
            [1] => Programmer
            [2] => 58000
            [3] => 1250
        )

    [4] => 
)

和print_r(array_column($data,2));会给你

Array
(
    [0] => Salary
    [1] => 50000
    [2] => 60000
    [3] => 58000
)

这有帮助吗？