SimpleXLSXGen

$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 = Shuchkin\SimpleXLSXGen::fromArray( $books );
$xlsx->saveAs('books.xlsx'); // or downloadAs('books.xlsx') or $xlsx_content = (string) $xlsx 

$ composer require shuchkin/simplexlsxgen

$data = [
    ['Integer', 123],
    ['Float', 12.35],
    ['Percent', '12%'],
    ['Currency $', '$500.67'],
    ['Currency €', '200 €'],
    ['Currency ₽', '1200.30 ₽'],
    ['Currency (other)', '<style nf="&quot;£&quot;#,##0.00">500</style>'],
    ['Currency Float (other)', '<style nf="#,##0.00\ [$£-1];[Red]#,##0.00\ [$£-1]">500.250</style>'],
    ['Datetime', '2020-05-20 02:38:00'],
    ['Date', '2020-05-20'],
    ['Time', '02:38:00'],
    ['Datetime PHP', new DateTime('2021-02-06 21:07:00')],
    ['String', 'Very long UTF-8 string in autoresized column'],
    ['Formula', '<f v="135.35">SUM(B1:B2)</f>'],
    ['Hyperlink', 'https://github.com/shuchkin/simplexlsxgen'],
    ['Hyperlink + Anchor', '<a href="https://github.com/shuchkin/simplexlsxgen">SimpleXLSXGen</a>'],
    ['Internal link', '<a href="sheet2!A1">Go to second page</a>'],
    ['RAW string', "\0" . '2020-10-04 16:02:00']
];
SimpleXLSXGen::fromArray($data)->saveAs('datatypes.xlsx');

$data = [
    ['Normal', '12345.67'],
    ['Bold', '<b>12345.67</b>'],
    ['Italic', '<i>12345.67</i>'],
    ['Underline', '<u>12345.67</u>'],
    ['Strike', '<s>12345.67</s>'],
    ['Bold + Italic', '<b><i>12345.67</i></b>'],
    ['Hyperlink', 'https://github.com/shuchkin/simplexlsxgen'],
    ['Italic + Hyperlink + Anchor', '<i><a href="https://github.com/shuchkin/simplexlsxgen">SimpleXLSXGen</a></i>'],
    ['Green', '<style color="#00FF00">12345.67</style>'],
    ['Bold Red Text', '<b><style color="#FF0000">12345.67</style></b>'],
    ['Size 32 Font', '<style font-size="32">Big Text</style>'],
    ['Blue Text and Yellow Fill', '<style bgcolor="#FFFF00" color="#0000FF">12345.67</style>'],
    ['Border color', '<style border="#000000">Black Thin Border</style>'],
    ['<top>Border style</top>','<style border="medium"><wraptext>none, thin, medium, dashed, dotted, thick, double, hair, mediumDashed, dashDot,mediumDashDot, dashDotDot, mediumDashDotDot, slantDashDot</wraptext></style>'],
    ['Border sides', '<style border="none dotted#0000FF medium#FF0000 double">Top No + Right Dotted + Bottom medium + Left double</style>'],
    ['Left', '<left>12345.67</left>'],
    ['Center', '<center>12345.67</center>'],
    ['Right', '<right>Right Text</right>'],
    ['Center + Bold', '<center><b>Name</b></center>'],
    ['Row height', '<style height="50">Row Height = 50</style>'],
    ['Top', '<style height="50"><top>Top</top></style>'],
    ['Middle + Center', '<style height="50"><middle><center>Middle + Center</center></middle></style>'],
    ['Bottom + Right', '<style height="50"><bottom><right>Bottom + Right</right></bottom></style>'],
    ['<center>MERGE CELLS MERGE CELLS MERGE CELLS MERGE CELLS MERGE CELLS</center>', null],
    ['<top>Word wrap</top>', "<wraptext>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book</wraptext>"],
];
SimpleXLSXGen::fromArray($data)
    ->setDefaultFont('Courier New')
    ->setDefaultFontSize(14)
    ->setColWidth(1, 35)
    ->mergeCells('A20:B20')
    ->saveAs('styles_and_tags.xlsx');

$PushkinDOB = '1799-07-06';
$data = [
    ['Datetime as raw string', "\0".'2023-01-09 11:16:34'],
    ['Date as raw string', "\0".$PushkinDOB],
    ['Disable type detection', "\0".'+12345'],
    ['Insert greater/less them simbols', "\0".'20- short term: <6 month'],

];
SimpleXLSXGen::fromArray($data)
    ->saveAs('test_rawstrings.xlsx');

// Fluid interface, output to browser for download
Shuchkin\SimpleXLSXGen::fromArray( $books )->downloadAs('table.xlsx');

// Fluid interface, multiple sheets
Shuchkin\SimpleXLSXGen::fromArray( $books )->addSheet( $books2 )->download();

// Alternative interface, sheet name, get xlsx content
$xlsx_cache = (string) (new Shuchkin\SimpleXLSXGen)->addSheet( $books, 'Modern style');

// Classic interface
use Shuchkin\SimpleXLSXGen
$xlsx = new SimpleXLSXGen();
$xlsx->addSheet( $books, 'Catalog 2021' );
$xlsx->addSheet( $books2, 'Stephen King catalog');
$xlsx->downloadAs('books_2021.xlsx');
exit();

// Autofilter
$xlsx->autoFilter('A1:B10');

// Freeze rows and columns from top-left corner up to, but not including,
// the row and column of the indicated cell
$xlsx->freezePanes('C3');

// RTL mode
// Column A is on the far right, Column B is one column left of Column A, and so on. Also, information in cells is displayed in the Right to Left format.
$xlsx->rightToLeft();

// Set Meta Data Files
// this data in propertis Files and Info file in Office 
$xlsx->setAuthor('Sergey Shuchkin <sergey.shuchkin@gmail.com>')
    ->setCompany('Microsoft <info@microsoft.com>')
    ->setManager('Bill Gates <bill.gates@microsoft.com>')
    ->setLastModifiedBy("Sergey Shuchkin <sergey.shuchkin@gmail.com>")
    ->setTitle('This is Title')
    ->setSubject('This is Subject')
    ->setKeywords('Keywords1, Keywords2, Keywords3, KeywordsN')
    ->setDescription('This is Description')
    ->setCategory('This is Сategory')
    ->setApplication('Shuchkin\SimpleXLSXGen')

<?php // array2excel.php
if (isset($_POST['array2excel'])) {
    require __DIR__.'/simplexlsxgen/src/SimpleXLSXGen.php';
    $data = json_decode($_POST['array2excel'], false);
    \Shuchkin\SimpleXLSXGen::fromArray($data)->downloadAs('file.xlsx');
    return;
}
?>
<html lang="en">
<head>
    <title>JS array to Excel</title>
</head>
<script>

function array2excel() {
    var books = [
        ["ISBN", "title", "author", "publisher", "ctry"],
        [618260307, "The Hobbit", "J. R. R. Tolkien", "Houghton Mifflin", "USA"],
        [908606664, "Slinky Malinki", "Lynley Dodd", "Mallinson Rendel", "NZ"]
    ];
    var json = JSON.stringify(books);

    var request = new XMLHttpRequest();

    request.onload = function () {
        if (this.status === 200) {
            var file = new Blob([this.response], {type: this.getResponseHeader('Content-Type')});
            var fileURL = URL.createObjectURL(file);
            var filename = "", m;
            var disposition = this.getResponseHeader('Content-Disposition');
            if (disposition && (m = /"([^"]+)"/.exec(disposition)) !== null) {
                filename = m[1];
            }
            var a = document.createElement("a");
            if (typeof a.download === 'undefined') {
                window.location = fileURL;
            } else {
                a.href = fileURL;
                a.download = filename;
                document.body.appendChild(a);
                a.click();
            }
        } else {
            alert("Error: " + this.status + "  " + this.statusText);
        }
    }
    
    request.open('POST', "array2excel.php");
    request.responseType = "blob";
    request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
    request.send("array2excel=" + encodeURIComponent(json));
}
</script>
<body>
<input type="button" onclick="array2excel()" value="array2excel" />
</body>
</html>

ini_set('error_reporting', E_ALL );
ini_set('display_errors', 1 );

$data = [
    ['Debug', 123]
];

Shuchkin\SimpleXLSXGen::fromArray( $data )->saveAs('debug.xlsx');