<?php

$array[] = $_POST["data"];

use Shuchkin\SimpleXLSXGen;

ini_set('error_reporting', E_ALL);
ini_set('display_errors', true);

// require_once __DIR__.'/../src/SimpleXLSXGen.php';
require_once 'assets/simplexlsx-master/src/SimpleXLSXGen.php';

$books = [
    ['ISBN', 'title', 'author', 'publisher', 'ctry' ],
    [618260307, 'The Hobbit', 'J. R, R, Tolkien', 'Houghton Mifflin', 'USA'],
    [908606664, 'Slinky Malinki', 'Lynley Dodd', 'Mallinson Rendel', 'NZ']
];
$xlsx = SimpleXLSXGen::fromArray( $array );
$xlsx->downloadAs('books3.xlsx'); // or downloadAs('books.xlsx') or $xlsx_content = (string) $xlsx 

return $xlsx;
?>