genderwatchprotocol/spreadSheetReader/read_write_xlsx.php

<?php
require $_SERVER['DOCUMENT_ROOT'] . '/spreadSheetReader/SimpleXLSX.php';
require $_SERVER['DOCUMENT_ROOT'] . '/spreadSheetReader/SimpleXLSXGen.php';

function read_xls_file($filename){
    $fileContent = [];
    if ($xlsx = SimpleXLSX::parse($filename)) {
        $fileContent = ($xlsx->rows());
    } else {
        echo SimpleXLSX::parseError();
    }
    return $fileContent;
}



function write_xlsxFile($filename, $data) {
    $xlsx = SimpleXLSXGen::fromArray($data);
    $xlsx->saveAs($filename);
}

function download_xlsxFile($data) {
    $xlsxArray = read_xls_file($_SERVER['DOCUMENT_ROOT'] ."/data/data.xlsx");
    foreach ($data as $row) {
        array_push($xlsxArray, $row);
    }
    $xlsx = SimpleXLSXGen::fromArray($xlsxArray);
    $xlsx->downloadAs("data.xlsx");
}