Payment Gateway API

I need someone to build a simple Payment Gateway API in PHP. This gateway must be able to interface with the following payment processors. It must support the parameters to support Card-Present transactions and EMV. It must meet US standards for EMV and the implementation must be PCI compliant. The development must be familia with PCI compliance and be able to deliver the code and run thru the PCI compliance process to certify the API. Not front end or back end is needed, just the API. The API must take json messages, process the payment via the provided payment processor and return the results. Payment Processors to be supported: WorldPay Global Payments Nova/ Elavon First Data (North) First Data (South) First Data (Nashville) First Data (Omaha) Fifth Third PaymentTech Tampa TSYS/ Vital Mercury / Merchant e-Solutions.