<?php

class AuthnetARB {

    private $login    = "ertdev6345";
    private $transkey = "SR2dsf54dEn7vFLQ";
    private $test     = true;

    private $params  = array();
    private $success = false;
    private $error   = true;

    private $xml;
    private $response;
    private $resultCode;
    private $code;
    private $text;
    private $subscrId;

    public function __construct()
    {
        $subdomain = ($this->test) ? 'apitest' : 'api';
        $this->url = "https://" . $subdomain . ".authorize.net/xml/v1/request.api";

        $this->params['interval_unit']    = 'months';
        $this->params['interval_length']  = 1;
        $this->params['startDate']        = date("Y-m-d", strtotime("+ 1 month"));
        $this->params['totalOccurrences'] = 9999;
        $this->params['trialOccurrences'] = 0;
        $this->params['trialAmount']      = 0.00;
    }

    private function process($retries = 3)
    {
        $count = 0;
        while ($count < $retries)
        {
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $this->url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_HTTPHEADER, Array("Content-Type: text/xml"));
            curl_setopt($ch, CURLOPT_HEADER, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $this->xml);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
            $this->response = curl_exec($ch);
            $this->parseResults();
            if ($this->resultCode === "Ok")
            {
                $this->success = true;
                $this->error   = false;
                break;
            }
            else
            {
                $this->success = false;
                $this->error   = true;
                break;
            }
            $count++;
        }
        curl_close($ch);
    }

    public function createAccount()
    {
        $this->xml = "&lt;?xml version='1.0' encoding='utf-8'?&gt;
          &lt;ARBCreateSubscriptionRequest xmlns='AnetApi/xml/v1/schema/AnetApiSchema.xsd'&gt;
              &lt;merchantAuthentication&gt;
                  &lt;name>" . $this->login . "&lt;/name&gt;
                  &lt;transactionKey&gt;" . $this->transkey . "&lt;/transactionKey&gt;
              &lt;/merchantAuthentication&gt;
              &lt;refId&gt;" . $this->params['refID'] ."&lt;/refId&gt;
              &lt;subscription&gt;
                  &lt;name&gt;". $this->params['subscrName'] ."&lt;/name&gt;
                  &lt;paymentSchedule&gt;
                      &lt;interval&gt;
                          &lt;length&gt;". $this->params['interval_length'] ."&lt;/length&gt;
                          &lt;unit&gt;". $this->params['interval_unit'] ."&lt;/unit&gt;
                      &lt;/interval&gt;
                      &lt;startDate&gt;" . $this->params['startDate'] . "&lt;/startDate&gt;
                      &lt;totalOccurrences&gt;". $this->params['totalOccurrences'] .
                      "&lt;/totalOccurrences&gt;
                      &lt;trialOccurrences&gt;". $this->params['trialOccurrences'] .
                      "&lt;/trialOccurrences&gt;
                  &lt;/paymentSchedule&gt;
                  &lt;amount&gt;". $this->params['amount'] ."&lt;/amount&gt;
                  &lt;trialAmount&gt;" . $this->params['trialAmount'] . "&lt;/trialAmount&gt;
                  &lt;payment&gt;
                      &lt;creditCard&gt;
                          &lt;cardNumber&gt;" . $this->params['cardNumber'] . "&lt;/cardNumber&gt;
                          &lt;expirationDate&gt;" . $this->params['expirationDate'] .
                          "&lt;/expirationDate&gt;
                      &lt;/creditCard&gt;
                  &lt;/payment&gt;
                  &lt;billTo&gt;
                      &lt;firstName&gt;". $this->params['firstName'] . "&lt;/firstName&gt;
                      &lt;lastName&gt;" . $this->params['lastName'] . "&lt;/lastName&gt;
                      &lt;address&gt;" . $this->params['address'] . "&lt;/address&gt;
                      &lt;city&gt;" . $this->params['city'] . "&lt;/city&gt;
                      &lt;state&gt;" . $this->params['state'] . "&lt;/state&gt;
                      &lt;zip&gt;" . $this->params['zip'] . "&lt;/zip&gt;
                  &lt;/billTo&gt;
              &lt;/subscription&gt;
          &lt;/ARBCreateSubscriptionRequest&gt;";
        $this->process();
    }

    public function setParameter($field = "", $value = null)
    {
        $field = (is_string($field)) ? trim($field) : $field;
        $value = (is_string($value)) ? trim($value) : $value;
        $this->params[$field] = $value;
    }

    private function parseResults()
    {
        $this->resultCode = $this->parseXML('&lt;resultCode&gt;', '&lt;/resultCode&gt;');
        $this->code       = $this->parseXML('&lt;code&gt;', '&lt;/code&gt;');
        $this->text       = $this->parseXML('&lt;text&gt;', '&lt;/text&gt;');
        $this->subscrId   = $this->parseXML('&lt;subscriptionId&gt;', '&lt;/subscriptionId&gt;');
    }

    private function ParseXML($start, $end)
    {
        return preg_replace('|^.*?'.$start.'(.*?)'.$end.'.*?$|i', '$1', substr($this->response, 335));
    }

    public function getSubscriberID()
    {
        return $this->subscrId;
    }

    public function isSuccessful()
    {
        return $this->success;
    }

    public function isError()
    {
        return $this->error;
    }
}

?>