Help from programmers needed - Gateway integration

[thernes]

Hey all

 

Let me just first off all say that I am no programmer and that's the reason I am posting my question here. I am trying to integrate a payment gateway, but it seems that the checksum they need is not generated correctly. In the documentation for the gateway, this example is used;

 

function generateCheckSum($params, $secret_key) 
 { 
  return md5(http_build_query(array("merchant_id" => $params["merchant_id"],       
"order_id" => $params["invoiceid"], "amount" => $params["amount"],  
"currency" => $params["currency"], "order_text" => $params["description"],  
"flow_layout" => $params["flow_layout"], "secret_key" => $secret_key), null, "&")); 
 } 

 

Would it somehow be possible to not use this function and just create a value that looks something like this?

 

$checksum = md5("merchant=".$params["merchant_id"]."&orderid=".$params["invoiceid"]."&currency=".$params["currency"]."&amount=".$amount.""));

If not, what would be the correct of the function above as a hidden checksum field that is posted to a server?

 

Appreciate any help.