Question

我很难理解如何实现以下结果：

基本上我目前能够做的是输出带有转置数据的CSV文件，如上图左侧部分所示。我的问题是尝试获取已经转置的列名称，并与生成的查询数据位于同一行（我想要实现的内容在上图的右侧演示）。

我的代码如下：

$output = fopen('php://output', 'w');

$headers = array();    
$rows = array();
$row_names = array();

while($result = $stmt->fetch(PDO::FETCH_ASSOC)) {

    if(empty($headers)) {
        $headers = array_keys($result);

        // Transpose column names
        foreach($headers as $key=>$val)
        {
            $row_names[$key][] = $val;
        }
    }

    // Transpose column data
    foreach($result as $key=>$val)
    {
        $rows[$key][] = $val;
    }
}

// Prints the row names
foreach($row_names as $name)
{
   fputcsv ($output, $name); 
}

// Prints the row data
foreach($rows as $row)
{
   fputcsv ($output, $row); 
}


fclose($output);

exit;

我知道我可能不得不以某种方式将$ rows与$ row_names合并，然后用fputcsv做一个foreach，但我不知道如何实现这个...

这里是$ result的输出：

Array
(
[Tail #] => N6232D
[Aircraft Configuration] => IR
[Flight Date] => 2015-11-05
[Pilot (Last Name)] => Mars
[Airport] => GA03
[City] => Ringgold
[State/Province] => GA
[Pre-Hobbs Time] => 41242
[Post-Hobbs Time] => 23423
[Hobbs Time] => -17819
[Pre-Tach Time] => 
[Post-Tach Time] => 
[Tach Time] => 
[Window Start Time] => 00:00:00
[Window Close Time] => 00:00:00
[Total Image Window] => 00:00:00
[On Station (Revenue)] => 00:00:00
[Weather] => 00:00:00
[ATC] => 00:00:00
[Pictometry Equip Failure/Delay] => 00:00:00
[Unscheduled Maintenance Time] => 00:00:00
[Scheduled Maintenance Time] => 00:00:00
[Pilot Delay] => 00:00:00
[Ground Support Delay] => 00:00:00
[Ferry] => 01:00:00
[Fueling/Lunch] => 00:00:00
[Plane - No Pilot] => 00:00:00
[Nothing Assigned] => 00:00:00
[Other/Miscellaneous] => 02:15:00
[Pilot Reported Times] => 03:15:00
[Completed Flight Plans (Include Project Name)] => 
[Partial Flight Plans] => 
[Date of Last Control Field] => 2015-10-05
[Drives Shipped Tracking Number] => 
[Spare Drive Sets] => -1
[Remarks] => 
[Status] => APPROVED
)

这是$ row_names输出的片段：

这里是$ rows输出的片段：

Answer 1

如果两个数组的大小相同，那么使用带有索引计数器的简单for循环怎么样？并使用array_merge将标题名称和值合并到一行中。

// Prints the row names and the values in one row.
$count_rows = count($rows);
for($i=0; $i<$count_rows; $i++)
{
   fputcsv ($output, array_merge($row_names[$i], $rows[$i])); 
}

**编辑**

根据新信息，您可以像这样更改代码的开头

while($result = $stmt->fetch(PDO::FETCH_ASSOC)) {

    if(empty($headers)) {
        $headers = array_keys($result);

        // Transpose column names
        foreach($headers as $key=>$val)
        {
            $rows[$key][] = $val;
        }
    }

    // Transpose column data
    foreach($result as $key=>$val)
    {
        $rows[$key][] = $val;
    }
}

请注意，标题名称和值现在都存储在同一个数组中，但由于标题始终位于第一位，因此它总是成为您想要的每一行的第一个值。

现在我们可以在行上使用一个foreach。

// Prints the row data
foreach($rows as $row)
{
   fputcsv ($output, $row); 
}

Answer 2

每次转置时我都需要偏移$ rows数组：

define(['jquery', 'knockout'], function ($, ko) {

    ko.components.register('page1', {
    require: 'App/Controllers/page1'
});
ko.components.register('page2', {
    require: 'App/Controllers/page2'
});

    $('#body').html('<page1></page1>');

    ko.applyBindings();
})

PHP - 转置数据

2 个答案: