phpexcel - PHPExcel xlsx 到 csv vlookup 值显示为#REF

Question

使用 PHPExcel 将 xlsx 文件转换为 csv 时，多个工作表之间的 vlookup 值不会拉到 csv 文件（显示为 #REF！）。最常见的计算解决了一个问题，但不是 vlookup。

有什么建议么？这是我正在使用的代码：

include 'PHPExcel/IOFactory.php';

$objReader = PHPExcel_IOFactory::createReader($sread);
$objReader->setReadDataOnly(true);
$objPHPExcel = $objReader->load($fpath);
$loadedSheetNames = $objPHPExcel->getSheetNames();
$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'CSV');
$objWriter->setDelimiter("|x3x3x3x|");
$objWriter->setEnclosure("\"");

$sloop = 1;

//SHEET LOOP
foreach($loadedSheetNames as $sheetIndex => $loadedSheetName) { 
$tablex =   $trackid."_".$sloop;
$objPHPExcel->setActiveSheetIndexByName($loadedSheetName);
$highestRow = $objPHPExcel->getActiveSheet()->getHighestRow();
$highestColumn = $objPHPExcel->getActiveSheet()->getHighestColumn();
$highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);

$objWriter->setSheetIndex($sheetIndex);
$objWriter->save("files/".$loadedSheetName.".csv");

//LOAD DATA INTO DB HERE

$sloop++;
} //END OF SHEET LOOP