HostedPCI

require 'rubygems'
require 'active_merchant'
# add ActiveMerchant gem from  https://github.com/HostedPCI-Inc/active_merchant.git, branch: 'hostedpci_gateway'

# Initialize gateway, best place in Application.yml
gateway = ActiveMerchant::Billing::HostedpciGateway.new(
 :login => 'ObtainTestAccount',
 :password => '****',
 :hpci_api_host => 'Obtain API host'
 )

HostedPCI

<?php
 $params = new stdClass;
 $params->hpci_site_host_name = baseurl();
 $params->hpci_site_id = '520900';
 $params->hpci_location = 'checkout1';
 $params->hpci_query_string = $_SERVER['QUERY_STRING'];
 $params->hpci_api_host = 'https://api-wisvis1stg.c1.hostedpci.com/';
 $params->hpci_api_uid = 'ObtainTestAccount';
 $params->hpci_api_pwd = '*****';
?>

HostedPCI

package com.isyn.app.payment;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.text.DecimalFormat;