PHP-Shopping-Cart is a project mainly written in PHP, it's free.
Shopping Cart website using PHP
This is demo site based on PHP to implement Shopping Cart.
How to use: After installing LAMP or WAMP package:
(On windows) %SystemRoot%\system32\drivers\etc\hosts
(On linux) /etc/hosts
and add following line: 127.0.0.3 php-sc
E.g. path for WAMPServer: C:\wamp\bin\apache\Apache2.2.11\conf\extra\httpd-vhosts.conf
or
(On Linux/Ubuntu) /etc/apache2/sites-available/default
these lines: NameVirtualHost 127.0.0.3
<VirtualHost 127.0.0.3> DocumentRoot /path/to/PHP-Shopping-Cart ServerName php-sc