Question

我有一个以这种方式构建的csv文件。它以小时为单位显示了网页浏览量

 "00","ARTICLE 1",100
 "00","ARTICLE 2",50
 "00","ARTICLE 3",30
 "01","ARTICLE 1",40
 "01","ARTICLE 2",100
 "01","ARTICLE 4",200
 "02","ARTICLE 1",30
 "02","ARTICLE 2",40
 "02","ARTICLE 3",30
 "03","ARTICLE 5",30

我在我的php代码中导入csv，然后在多维数组中插入内容。当我var_dump我的数组时，这就是我得到的

Array
(
[00] => Array
    (
        [ARTICLE 1] => 100
        [ARTICLE 2] => 50
        [ARTICLE 3] => 30
    )

[01] => Array
    (
        [ARTICLE 1] => 40
        [ARTICLE 2] => 100
        [ARTICLE 4] => 200
    )

[02] => Array
    (
        [ARTICLE 1] => 30
        [ARTICLE 2] => 40
        [ARTICLE 3] => 30
    )

[03] => Array
    (
        [ARTICLE 5] => 30
    )

)

所以我的问题是“第4条”仅在“01”处查看但我希望它出现在键“00”，“02”，“03”中，默认值为0.同样的“第5条“仅出现在关键字”03“。我希望它出现在键“00”，“01”，“02”，“03”，“04”

最后，我希望我的阵列像这样上架

Array
(
 [00] => Array
    (
        [ARTICLE 1] => 100
        [ARTICLE 2] => 50
        [ARTICLE 3] => 30 
        [ARTICLE 4] => 0
        [ARTICLE 5] => 0
    )

[01] => Array
    (
        [ARTICLE 1] => 40
        [ARTICLE 2] => 100
        [ARTICLE 3] => 0
        [ARTICLE 4] => 200
        [ARTICLE 5] => 0
    )

[02] => Array
    (
        [ARTICLE 1] => 30
        [ARTICLE 2] => 40
        [ARTICLE 3] => 30
        [ARTICLE 4] => 0
        [ARTICLE 5] => 0
    )

[03] => Array
    (
        [ARTICLE 1] => 0
        [ARTICLE 2] => 0
        [ARTICLE 3] => 0
        [ARTICLE 4] => 0
        [ARTICLE 5] => 30
    )

)

我尝试过做这样的事情但是没有用

foreach ($orig as $item) {
$new[] = $item;
$new[] = $item;

}

有人可以帮忙吗？

更新

我试过这样的事情

foreach ($articles as $article) 
{
$pageviews2[$article] = $pageviews;
}

其中$ pageviews2包含我的csv文件的内容，并且数组文章以这种方式构建

$articles = Array("00", "01", "02", "03","04","05");

以下是我在var_dump $ pageviews2数组

时得到的结果

Array
(
[00] => Array
    (
        [00] => Array
            (
                [ARTICLE 1] => 100
                [ARTICLE 2] => 50
                [ARTICLE 3] => 30
            )

        [01] => Array
            (
                [ARTICLE 1] => 40
                [ARTICLE 2] => 100
                [ARTICLE 4] => 200
            )

        [02] => Array
            (
                [ARTICLE 1] => 30
                [ARTICLE 2] => 40
                [ARTICLE 3] => 30
            )

        [03] => Array
            (
                [ARTICLE 5] => 30
            )

    )

[01] => Array
    (
        [00] => Array
            (
                [ARTICLE 1] => 100
                [ARTICLE 2] => 50
                [ARTICLE 3] => 30
            )

        [01] => Array
            (
                [ARTICLE 1] => 40
                [ARTICLE 2] => 100
                [ARTICLE 4] => 200
            )

        [02] => Array
            (
                [ARTICLE 1] => 30
                [ARTICLE 2] => 40
                [ARTICLE 3] => 30
            )

        [03] => Array
            (
                [ARTICLE 5] => 30
            )

    )

Answer 1

我通常处理这种情况的方式就像你提到的那样，用一组已知值预先填充每个“外部”元素。这可以假设你确切地知道你想要在数组的第二维中有多少元素，并且你提前知道第一维中有多少元素。以下是一些演示代码：

$pageviews = array();
$articles = Array("00", "01", "02", "03");

$prepopulated = Array (
    "Article 1" => 0,
    "Article 2" => 0,
    "Article 3" => 0,
    "Article 4" => 0,
    "Article 5" => 0
);

然后，您可以在导入csv：

之前创建骨架数组

foreach ($articles as $article) {
    $pageviews[$article] = $prepopulated;
}

然后，当您从csv导入数据时，您正在执行的所有操作都将覆盖您刚刚创建的框架数组中的默认值：

if (($handle = fopen("pageviews.csv", "r")) !== FALSE) {
    while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) {
        $pageviews[$data[0]][$data[1]] = $data[2];
    }
    fclose($handle);
}

在重复的数组键/值中插入默认值

1 个答案: