Is there a recommended method for handling temporary BIC number conversions in PHP, such as using Excel tables from the Bundesbank?

To handle temporary BIC number conversions in PHP, you can use the Bundesbank's Excel tables to map old BIC codes to new ones. You can import the Excel tables into your PHP application and use them to perform the necessary conversions when needed.

// Load the Excel file containing the BIC code mappings
$excelFile = 'bundesbank_bic_mappings.xlsx';
$spreadsheet = \PhpOffice\PhpSpreadsheet\IOFactory::load($excelFile);

// Get the worksheet containing the BIC code mappings
$worksheet = $spreadsheet->getActiveSheet();

// Loop through the rows in the worksheet to extract the old and new BIC codes
foreach ($worksheet->getRowIterator() as $row) {
    $oldBic = $worksheet->getCell('A' . $row->getRowIndex())->getValue();
    $newBic = $worksheet->getCell('B' . $row->getRowIndex())->getValue();
    
    // Perform the necessary conversion using the old and new BIC codes
    // Your conversion logic here
}