spl_autoload_unregister(array('YiiBase', 'autoload'));
// register PHPExcel's autoloader ... PHPExcel.php will do it
        $phpExcelPath = Yii::getPathOfAlias('ext.phpexcel.Classes');
        include($phpExcelPath . DIRECTORY_SEPARATOR . 'PHPExcel.php');
// register Yii's autoloader again
        spl_autoload_register(array('YiiBase', 'autoload'));
        $inputFileType = PHPExcel_IOFactory::identify('uploads/xls.xlsx');
      //  var_dump($inputFileType);
        header("Content-type:text/html;charset=utf-8");
        $objReader = PHPExcel_IOFactory::createReader($inputFileType);