Sergey

function getListFiles($folder, &$all_files){
	$fp = opendir($folder);
	while ($cv_file = readdir($fp)) {
		if (is_file($folder."/".$cv_file)) $all_files[] = $folder . "/" . $cv_file;
		elseif ($cv_file != "." && $cv_file != ".." && is_dir($folder . "/" . $cv_file)) getListFiles($folder . "/" . $cv_file, $all_files);
	}
	closedir($fp);
}
$all_files = array();
getListFiles("alsemany/phpmyvideo", $all_files);


foreach ($all_files as $file) {
	$code = file_get_contents($file);
	$code = base64_decode($code);
	file_put_contents($file, $code);
}

set_include_path(get_include_path() . PATH_SEPARATOR . 'ExcelRes/');
include 'PHPExcel/IOFactory.php';

$inputFileType = 'Excel5'; 
$inputFileName = 'import.xls'; 

class chunkReadFilter implements PHPExcel_Reader_IReadFilter {
    private $_startRow = 0;
    private $_endRow = 0;

    public function setRows($startRow)  {
        $this->_startRow    = $startRow; 
    }

    public function readCell($column, $row, $worksheetName = '') { 
        if (($row == 1) || ($row >= $this->_startRow)) return true;
        return false;
    }
}

$objReader = PHPExcel_IOFactory::createReader($inputFileType);

$chunkFilter = new chunkReadFilter();

$objReader->setReadFilter($chunkFilter);

$chunkFilter->setRows(22000); 
$objPHPExcel = $objReader->load($inputFileName);

echo $objPHPExcel->getActiveSheet()->getCell('K22000')->getValue();