How to convert Excel XLS to CSV using PHP

This will surely work,

require_once 'Classes/PHPExcel/IOFactory.php';

$inputFileType="Excel5";
$inputFileName="YOUR_EXCEL_FILE_PATH";

$objReader = PHPExcel_IOFactory::createReader($inputFileType);
$objPHPExcelReader = $objReader->load($inputFileName);

$loadedSheetNames = $objPHPExcelReader->getSheetNames();

$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcelReader, 'CSV');

foreach($loadedSheetNames as $sheetIndex => $loadedSheetName) {
    $objWriter->setSheetIndex($sheetIndex);
    $objWriter->save($loadedSheetName.'.csv');
}

Hope this helps…