CZip::_addList

private function _addList($arFilesList, &$arResultList, $addDir, $removeDir, $removeAllDir, &$arParams)
{
	$arHeaders = [];
	if (($res = $this->_addFileList($arFilesList, $arHeaders, $addDir, $removeDir, $removeAllDir, $arParams)) != 1)
	{
		return $res;
	}

	//save the offset of the central dir
	$offset = @ftell($this->zipfile);

	//make central dir files header
	for ($i = 0, $counter = 0; $i < sizeof($arHeaders); $i++)
	{
		if ($arHeaders[$i]['status'] == 'ok')
		{
			if (($res = $this->_writeCentralFileHeader($arHeaders[$i])) != 1)
			{
				return $res;
			}
			$counter++;
		}
		$this->_convertHeader2FileInfo($arHeaders[$i], $arResultList[$i]);
	}

	$zip_comment = '';

	//the size of the central header
	$size = @ftell($this->zipfile) - $offset;

	//add central dir footer
	if (($res = $this->_writeCentralHeader($counter, $size, $offset, $zip_comment)) != 1)
	{
		unset($arHeaders);
		return $res;
	}
	return $res;
}