PhpSpreadsheet 块过滤器读取返回空行

Posted 2023-02-16

【中文标题】PhpSpreadsheet 块过滤器读取返回空行

【英文标题】：PhpSpreadsheet chunk filter read returning empty rows

【发布时间】：2018-10-10 00:18:57

【问题描述】：

我正在尝试按块读取 XLSX 文件。但是var_dump 输出中的一些块是空的。 我正在使用 php7.2 和 Laravel 5.5 框架。

这是我迄今为止尝试过的：

过滤器

class ChunkReadFilter implements IReadFilter

private $startRow = 0;
private $endRow   = 0;

// Set the list of rows that we want to read  
public function setRows($startRow, $chunkSize) 
    $this->startRow = $startRow;
    $this->endRow   = $startRow + $chunkSize;


public function readCell($column, $row, $worksheetName = '') 
    //  Only read the heading row, and the configured rows
  // if (($row == 1) || ($row >= $this->startRow && $row < $this->endRow)) 
 if (($row >= $this->startRow && $row < $this->endRow)) 
        if (in_array($column, range('A', 'L'))) 
            return true;
        

    
    return false;

代码

$inputFileType = 'Xlsx';
$inputFileName = $path;

$reader = IOFactory::createReader($inputFileType);
$chunkSize = 100;
$chunkFilter = new ChunkReadFilter();
for ($startRow = 1; $startRow <= 800; $startRow += $chunkSize) 

     //Tell the Read Filter which rows we want this iteration  
    $chunkFilter->setRows($startRow,$chunkSize);
    //Tell the Reader that we want to use the Read Filter 
    $reader->setReadFilter($chunkFilter);
    //Load only the rows that match our filter  
    $spreadsheet = $reader->load($inputFileName);
    //Do some processing here
    $sheetData = $spreadsheet->getActiveSheet()
   ->toArray(null, true, true, true);

      var_dump($sheetData);
   

【参考方案1】：

PHPSpreadsheet 卡盘阅读器仅返回当前页面值并基于 NULL，

请检查以下可以解决您问题的代码。

$startRow       = 1;
$arrStrHeadings = [];
$chunkFilter    = new ChunkReadFilter();
$objCsvReader   = new \PhpOffice\PhpSpreadsheet\Reader\Csv();

$objCsvReader->setReadDataOnly(true);
$objCsvReader->setReadFilter($chunkFilter);

while (true) 

    $chunkFilter->setRows($startRow, self::CHUNK_LIMIT);

    $objWorksheet = $objCsvReader->load($arrMixSource['file'])->getActiveSheet();

    $pRange = 'A' . $startRow . ':' . $objWorksheet->getHighestColumn() . $objWorksheet->getHighestRow();

    $arrStrSheetData = $objWorksheet->rangeToArray( $pRange, $nullValue = null, $calculateFormulas = true, $formatData = true, $returnCellRef = false);

    if (0 == count($arrStrSheetData)) 
        break;
    

    if( 1 == $startRow && empty($arrStrHeadings)) 
        $arrStrHeadings = array_map('strtolower', array_shift($arrStrSheetData));
    

    foreach ($arrStrSheetData as $arrStrSheetDatum) 

        $arrStrSheetDatum = array_combine($arrStrHeadings, $arrStrSheetDatum);

        // Do oprations...
    

    $startRow += self::CHUNK_LIMIT;