How to change this script to zip an array of dirs?

How to change this script to zip an array of dirs?

References

Reference NO 1

http://stackoverflow.com/questions/15200539/how-to-change-this-script-to-zip-an-array-of-dirs

Reference NO 2

http://davidwalsh.name/create-zip-php

Reference NO 3

http://ramui.com/articles/php-zip-files-and-directory.html

Reference NO 4

http://php.net/manual/en/ziparchive.extractto.php

Reference NO 5

http://css-tricks.com/snippets/php/display-styled-directory-contents/

Reference NO 6

http://snipplr.com/view/69947/

Reference NO 7

http://www.mediawiki.org/wiki/Manual:Configuring_file_uploads

Reference NO 8

http://code.google.com/p/mollify/wiki/ConfigurationAdditionalOptions