phpsreadsheet create excel from html table - phpspreadsheet

Question

There is no documentation for using phpspreadsheet to form an excel file from a html table.
This is possible using "jquery.table2excel.js" but it seems pretty old; makes old excel files and makes warnings about the file.
phpspreadsheet makes a good excel file, but I just can't find any answers to do the function.

Answer 1

If you are generating an Excel file from pre-rendered HTML content you can do so automatically using the HTML Reader. This is most useful when you are generating Excel files from web application content that would be downloaded/sent to a user.
$htmlString = '<table>
<tr>
<td>Hello World</td>
</tr>
<tr>
<td>Hello<br />World</td>
</tr>
<tr>
<td>Hello<br>World</td>
</tr>
</table>';
$reader = new \PhpOffice\PhpSpreadsheet\Reader\Html();
$spreadsheet = $reader->loadFromString($htmlString);
$writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet, 'Xls');
$writer->save('write.xls');
You can read more in this link

Answer 2

Use the HTML Reader to read the data into a Spreadsheet, then the appropriate writer (xls or xlsx)

Answer 3

You can use sheetJS library to convert custom html table to xslx.
Working Code sample :
<script type="text/javascript" src="//unpkg.com/xlsx/dist/shim.min.js"></script>
<script type="text/javascript" src="//unpkg.com/xlsx/dist/xlsx.full.min.js"></script>
<script type="text/javascript" src="//unpkg.com/blob.js#1.0.1/Blob.js"></script>
<script type="text/javascript" src="//unpkg.com/file-saver#1.3.3/FileSaver.js"></script>
<div id="container2">
<title>SheetJS Table Export</title>
<table id="data-table">
<tr>
<td>ID</td>
<td>Name</td>
</tr>
<tr>
<td>1</td>
<td>Johnny</td>
</tr>
</table>
</div>
<p id="xportxlsx" class="xport"><input type="submit" value="Export to XLSX!" onclick="doit('xlsx');"></p>
<script type="text/javascript">
function doit(type, fn, dl) {
var elt = document.getElementById('data-table');
var wb = XLSX.utils.table_to_book(elt, {sheet:"Sheet JS"});
return dl ?
XLSX.write(wb, {bookType:type, bookSST:true, type: 'base64'}) :
XLSX.writeFile(wb, fn || ('test.' + (type || 'xlsx')));
}
function tableau(pid, iid, fmt, ofile) {
if(typeof Downloadify !== 'undefined') Downloadify.create(pid,{
swf: 'downloadify.swf',
downloadImage: 'download.png',
width: 100,
height: 30,
filename: ofile, data: function() { return doit(fmt, ofile, true); },
transparent: false,
append: false,
dataType: 'base64',
onComplete: function(){ alert('Your File Has Been Saved!'); },
onCancel: function(){ alert('You have cancelled the saving of this file.'); },
onError: function(){ alert('You must put something in the File Contents or there will be nothing to save!'); }
});
}
tableau('xlsxbtn', 'xportxlsx', 'xlsx', 'test.xlsx');
</script>