How can we create an payment gateway for our site

hello! Well, i think you should contact the big and famous payment companies like liberty reserve, paypal, alertpay, webmoney, and ask them how can you make you pyment gateway, but you must also know that there are also some investments that you have to give!

There are companies that specialize in processing credit and debit card purchases for their clients. Some web hosting sites offer hosting for this service, others offer it and charge for it. You may be able to employ someone to make a script for you. You can also set up your site to accept payments through services such as Paypal.