|Simple Order Form
This PHP script allows you to place a form on your website and let users place orders. The order information is sent to an e-mail address. This form can generate a receipt to the sender and prevents spammers from using it to send spam. It requires PHP 5+. You can create multiple fields, set certain ones to be required, and it creates a "thank you!" or "required fields" page.
Customers can choose a product and can add additional features that add into the base price. The user is then sent to a payment gateway. The options are 2Checkout.com, PayPal, and Google Checkout. It can also calculate tax and add that to the overall price.