Stuff
public text v1 · immutable$files=array(
'05012012.xlsx'
,'06122011.xlsx'
,'10012012.xlsx'
,'23122011.xlsx'
,'26122011.xlsx'
,'28122011.xlsx'
,'29122011.xlsx'
,'30112011.xlsx'
,'30122011.xlsx');
/** So we include PHPExcel to perform the calculations **/
include 'PHPExcel/IOFactory.php';
$f='03012012.xlsx';
$excel = PHPExcel_IOFactory::load($f);
$writer = PHPExcel_IOFactory::createWriter($excel, 'CSV');
$writer->setDelimiter(";");
$writer->setEnclosure("");
$writer->save(str_replace('.xlsx','.csv',$f));