Chase Online XML API (Orbital Test Case) Integration

I need someone to code in PHP class to allow us to easily interface into the Chase Paymentech/Orbital payment gateway. It should use the Online XML API. The full documentation of the XML can be found at [login to view URL] The code must follow best practices for PHP security. The code must produce and submit well formed XML, and be able to receive and process XML responses properly. The code must be able to pass certification testing by Chase. The class needs to have capabilities to allow me to do the following: New Order (Used for all MOP's except gift card) and Basic Credit Card Processing (Authorisation and Mark for Capture) and Card Security values. Before submitting a bid please be sure you are capable of this type of project and cite references where you have done projects like this successfully. The class needs to be well documented and some basic example code may be needed to make sure it will certify. This is an urgent request. Note : Integration URL : [login to view URL] The website is made in Custom PHP.