@sweetlati - It does look like Sokkit is no longer available - http://www.sokkit.net/ - unfortunate, because it was a well working resource for PHP that didn't require a web server. I would recommend, if you're wanting to learn PHP - that you get a domain name, setup a hosting account here with TCH, then purchase this book in paper or digital - and start coding through the examples in it. You'll be PHPing in no time.
Book: http://www.sitepoint.com/books/phpmysql5/