Question

我需要读取2个CSV文件数据，合并标题并删除重复的标题。然后，我需要将数据添加到相应的标头中，如果文件中没有标头的数据，则默认为空。

For example:

File one:
'Name', 'Surname', 'Address'
'John', 'Doe',     'example st 123'

File two:
'Surname', 'City', 'Gender'
'Doe',     'Riga',  'Male'

Output File:
'Name', 'Surname', 'Address', 'City', 'Gender'
'John', 'Doe','example st 123', ' ',   ' '
' ',    'Doe',        ' ',    'Riga', 'Male'

到目前为止，我已经制作了一个给我这些数组的类：

array(5) {
  [0]=>
  string(4) "Name"
  [1]=>
  string(7) "Surname"
  [2]=>
  string(7) "Address"
  [4]=>
  string(4) "City"
  [5]=>
  string(6) "Gender"
}
array(2) {
  [0]=>
  array(1) {
    [1]=>
    array(3) {
      [0]=>
      string(4) "John"
      [1]=>
      string(3) "Doe"
      [2]=>
      string(10) "Street 123"
    }
  }
  [1]=>
  array(1) {
    [1]=>
    array(3) {
      [0]=>
      string(3) "Doe"
      [1]=>
      string(4) "Riga"
      [2]=>
      string(4) "Male"
    }
  }
}

这是通过此类完成的：

class Reader
{
    private $filePaths = [];
    private $headers = [];
    private $data = [];

    public function add(string $filePath): void
    {
        $this->filePaths[] = $filePath;
    }
    public function read(): void
    {
        foreach ($this->filePaths as $filePath) {

            $getData = array_map('str_getcsv', file($filePath));

            $this->headers = array_unique(array_merge($this->headers, $getData[0]));

            unset($getData[0]);

            $this->data[] = $getData;
        }
    }

    public function getData(): array
    {
        return $this->data;
    }

    public function getHeaders(): array
    {
        return $this->headers;
    }

任何人都可以帮助我了解如何格式化数据以获得预期结果吗？

目前，我所能得到的就是这个：

Name,Surname,Address,City,Gender
John,Doe,"Street 123"
Doe,Riga,Male

Answer 1

这是我的解决方法

class Reader
{
    public $filePaths = [];
    private $headers = [];
    private $data = [];

    private $originalHeaders = [

    ];

    public function add(string $filePath): void
    {
        $this->filePaths[] = $filePath;
    }
    public function read(): void
    {
        foreach ($this->filePaths as $filePath) {
            $fp = fopen($filePath, 'r');

            $h = fgetcsv($fp);
            $this->originalHeaders[] = $h;
            fclose($fp);
            $this->headers = array_unique(array_merge($this->headers, $h));
        }
        print_r($this->originalHeaders);
        print_r($this->headers);


        $i = 0; // so we know which file we are processing
        foreach ($this->filePaths as $i => $filePath) {
            $getData = array_map('str_getcsv', file($filePath));
            unset($getData[0]);

            $this->data = array_merge($this->data, $this->mapData($i, $getData));
        }
        print_r($this->data);
    }
    public function output($filename)
    {
        $fp = fopen($filename, 'w');
        fputcsv($fp, $this->headers);
        foreach ($this->data as $row) {
            fputcsv($fp, $row);
        }
        fclose($fp);
    }


    /**
     * Map data in column i to column j
     */
    private function mapData($n, $data) : array
    {
        $inputColumns = $this->originalHeaders[$n];
        $outputColumns = $this->headers;
        $columnIndex = array_flip($outputColumns);
        $mappedData = [];
        foreach( $data as $i => $row ) {
            $workData = array_fill(0, count($this->headers), '');
            // Now take each input data and put it in the right place
            foreach ($row as $j => $value) {
                // Get name of source column
                $sourceColumn = $inputColumns[$j];
                // Where does that data go in the output
                $targetColumnIndex = $columnIndex[$sourceColumn];
                // Put the data there
                $workData[$targetColumnIndex] = $value;
            }
            // Store it in the mapped data
            $mappedData[] = $workData;
        }
        return $mappedData;
    }

    public function getData(): array
    {
        return $this->data;
    }

    public function getHeaders(): array
    {
        return $this->headers;
    }
}

$r = new Reader();
$r->filePaths = ['file1.csv', 'file2.csv'];
$r->read();

输入1

Name,Surname,Address
John,Doe,"example st 123"
Natalie,Portman,"1 Starway Ave"
Scotty,Clarke,"Some street Mississippi"

输入2

Surname,City,Gender
Doe,Riga,Male
Ford,"Los Angeles",Male

输出

Name,Surname,Address,City,Gender
John,Doe,"example st 123",,
Natalie,Portman,"1 Starway Ave",,
Scotty,Clarke,"Some street Mississippi",,
,Doe,,,Riga,Male
,Ford,,,"Los Angeles",Male

根据公共字段匹配和合并csv数据字段

1 个答案: