How to remove all merged cells from an Excel file in php? - php

Question

I have a Excel file like this:
I wrote a code that allows me to extract all the photos from the xlsx file and insert them in a folder.
There are several merged cells in the file and before processing I would like to remove all the merged cells from the Excel file. I tried with $objPHPExcel->setActiveSheetIndex("0")->unmergeCells(); but it doesn't work.
How can I solve my problem?
<?php
//uploaded xlsx file recovery
$xlsx="C:/wamp64/www/Extract_pictures_Excel/xlsx_files/".date('Y_m_d H-i-s')."_file.xlsx";
move_uploaded_file($_FILES["mon_fichier"]["tmp_name"],$xlsx);
require_once 'PHPExcel/Classes/PHPExcel/IOFactory.php';
$objPHPExcel = PHPExcel_IOFactory::load($xlsx);
//Unique name folder for the pictures
$dirname = uniqid();
mkdir("C:/wamp64/www/Extract_pictures_Excel/pictures_folders/$dirname/");
$sheet = $objPHPExcel->getActiveSheet();
//Unmerge all cells
foreach($sheet->getMergeCells() as $cells)
{
$sheet->unmergeCells($cells);
// var_dump($cells);
}
$objWriter = new PHPExcel_Writer_Excel2007($objPHPExcel);
$objWriter->save('./unmerged_files/unmerged.xlsx');
//reading the xlsx file
foreach ($sheet->getDrawingCollection() as $drawing ) {
if ($drawing instanceof PHPExcel_Worksheet_MemoryDrawing) {
ob_start();
call_user_func(
$drawing->getRenderingFunction(),
$drawing->getImageResource()
);
$imageContents = ob_get_contents();
ob_end_clean();
switch ($drawing->getMimeType()) {
case PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_PNG :
$extension = 'png'; break;
case PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_GIF:
$extension = 'gif'; break;
case PHPExcel_Worksheet_MemoryDrawing::MIMETYPE_JPEG :
$extension = 'jpg'; break;
}
} else {
$zipReader = fopen($drawing->getPath(),'r');
$imageContents = '';
while (!feof($zipReader)) {
$imageContents .= fread($zipReader,1024);
}
fclose($zipReader);
$extension = $drawing->getExtension();
$chemin = "C:/wamp64/www/Extract_pictures_Excel/pictures_folders/$dirname/";
}
//retrieving cell values for the images name
$row = (int) substr($drawing->getCoordinates(), 1);
//Condition to read merged cell
$stylecode = $sheet->getCell('H'.$row)->getValue();
$colorcode = $sheet->getCell('E'.$row)->getValue();
$finalname = $stylecode.'_'.$colorcode;
$myFileName = $chemin.$finalname.'.'.$extension;
file_put_contents($myFileName, $imageContents);
}
?>

Answer 1

I have changed the library to PhpOffice\PhpSpreadsheet because PHPExcel is outdated.
require_once './vendor/autoload.php';
use PhpOffice\PhpSpreadsheet\IOFactory;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;
$xlsx = './test/catalogmtnwr2021202009210323241.xlsx';
$spreadsheet = IOFactory::load($xlsx);
$sheet = $spreadsheet->getActiveSheet();
Now I am testing what is merged and unmerge it
echo 'before unmerge: ', count($sheet->getMergeCells()), PHP_EOL;
foreach($sheet->getMergeCells() as $cells)
$sheet->unmergeCells($cells);
echo 'after unmerge: ', count($sheet->getMergeCells()), PHP_EOL;
before unmerge: 678
after unmerge: 0
And at last write back into file
$writer = new Xlsx($spreadsheet);
$writer->save('./test/unmerged.xlsx');
This unmerged the cells as expected