Phpspreadsheet edit excel file

<?php

//load spreadsheet
$spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load("yourspreadsheet.xlsx");

//change it
$sheet = $spreadsheet->getActiveSheet();
$sheet->setCellValue('A1', 'New Value');

//write it again to Filesystem with the same name (=replace)
$writer = new Xlsx($spreadsheet);
$writer->save('yourspreadsheet.xlsx');

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