Fatal error message in linux

Feb 20, 2013 at 2:49 PM
I have a website running in OSX with xampp without problems. When I switched to linux (Ubuntu) I get the following error:

Fatal error: Class 'ZipArchive' not found in /opt/lampp/htdocs/cdb/php/ext/PHPExcel-1.7.6/Classes/PHPExcel/Reader/Excel2007.php on line 368

Please, can you tell me how about the fix?