How can PHP be used to convert an Excel-based financial management tool into a web application?

To convert an Excel-based financial management tool into a web application using PHP, you can create a PHP script that reads the data from the Excel file and displays it on a web page using HTML and CSS. You can use the PHPExcel library to read the Excel file and extract the data, then format it using PHP and display it on a web page.

require 'PHPExcel/Classes/PHPExcel.php';

$excelFile = 'financial_tool.xlsx';

$excelReader = PHPExcel_IOFactory::createReaderForFile($excelFile);
$excelObj = $excelReader->load($excelFile);
$worksheet = $excelObj->getSheet(0);
$lastRow = $worksheet->getHighestRow();

echo '<table>';
for ($row = 1; $row <= $lastRow; $row++) {
    echo '<tr>';
    echo '<td>' . $worksheet->getCell('A' . $row)->getValue() . '</td>';
    echo '<td>' . $worksheet->getCell('B' . $row)->getValue() . '</td>';
    echo '<td>' . $worksheet->getCell('C' . $row)->getValue() . '</td>';
    echo '</tr>';
}
echo '</table>';