PAYMENT GETWAY

I need a payment getway. I would like this software to be developed using PHP, python, java.

i neet the getway which will have a simple API to be integrated to several e commerce
posibilities to have a merchant accounts where any store owner can integrate with my payment gate way

it should have posibilities to be kntegrated to other payment processoes at anh time i prefer to upgrade ig feature

online management tools
fraud tools
strong security