CSVReader::ReadBlock

public function ReadBlock($file, &$bytesRead = false, $lineLimit = false)
{
	if(mb_strpos($file, $_SERVER['DOCUMENT_ROOT']) != 0) // not found or somwhere else
		$file = $_SERVER['DOCUMENT_ROOT'].$file;

	if(!file_exists($file) || !is_readable($file))
		throw new MainSystemException('Cannot open file '.$file.' for reading');

	$this->LoadFile($file);

	return $this->ReadBlockLowLevel($bytesRead, $lineLimit);
}