php - 如何将此文本转换为所需的数组格式并以 csv 格式导出？

Question

我使用pdftotext工具从 pdf 中提取了这段文本

请在下面找到文本结构

stage    title1    title2  title3  title4
I        value1    value2  value3  
II                         value5  value6

stage    Other1      Other2     Other3     Other4
I        otherval1   otherval2  otherval3  otherval4

现在我想以这种方式使用适当的列和标题以 CSV 格式导出此文本，或者以这种方式构建一个数组

[
  "category" => "title1",
  "score"    => "value1",
],
[
  "category" => "title2",
  "score"    => "value2",
],
[
  "category" => "title3",
  "score"    => "value3"
],
// unable to to do this
[
  "category" => "title3",
  "score"    => "value5"
],
[
  "category" => "title4",
  "score"    => "value6",
],

.
.
// so on

现在的问题是

• I 阶段和 II 阶段中的列值是可选的，但任何一行中的每一列都将包含至少一个值
• 第二阶段排是可选的，可能存在或不存在
• 如果阶段 II 行存在，则该行中至少存在一个列值

我面临的问题是如何映射

• value5 到 title3
• value6 到 title4

这是我的解析器代码（PHP）

$rows = explode("\n", $pdfExtractedText);
$rows = array_values(array_filter($rows));

$categories = array_values(array_filter(explode(" ", $rows[7])));
$stage1Scores = array_values(array_filter(explode(" ", $rows[8])));
$stage2Scores = array_values(array_filter(explode(" ", $rows[9])));
var_dump($categories);
var_dump($stage1Scores);
var_dump($stage2Scores);

输出：

// categories
array:13 [
  0 => "stage"
  1 => "title1"
  2 => "title2"
  3 => "title3"
  4 => "title4"
]

//values - Index preserved so that I can map with categories
array:14 [
  0 => "I"
  1 => "value1"
  2 => "value2"
  3 => "value3"
  4 => "value4"
]

// index not preserved :(
array:2 [
  0 => "II"
  1 => "value5",
  2 => "value6"
]

标签： phpdata-extractionpdftotext

Answer 1

那就试试这个

$csv = "";

$csv .= implode("," , $categories) . PHP_EOL; 
$csv .= implode("," , $stage1scores) . PHP_EOL;
$csv .= implode("," , $stage2scores) . PHP_EOL;

然后将其写入文件。