public static function toCsv($file)
{
$splitted = explode(".", $file->filename);
$extension = end($splitted);
switch ($extension) {
case 'csv':
return $file->getBytes();
case 'xls':
return CommonTools::xlsToCsv($file, 'Excel5');
case 'xlsx':
return CommonTools::xlsToCsv($file, 'Excel2007');
default:
Yii::app()->user->setFlash('error', "bad extension :{$extension} , {$file->filename}");
}
return null;
}
