Override the default ZipArchive Class in PHPExcel for XLS and XLSX exports |

By default Store Exporter Deluxe uses the ZipArchive Class for generating the OfficeOpenXML file format required by the XLS and XLSX file types. Where the ZipArchive Class is unavailable – not installed or disabled – you can override Store Exporter Deluxe to use an alternate Class called PCLZip by adding the following WordPress Filter to your WordPress Theme’s functions.php file.