dps_processor.inc

<?php
define('DPS_LOG_FILE_PREFIX', 'dps_transactions_account_');


class Dps_Processor
{
    
    
    private static $_URL = 'https://sec.paymentexpress.com/pxpost.aspx';


    private static $_test_account = Array(
                                    'username'  => 'SquizLabsDev',
                                    'password'  => 'd25wdfs6',
                                 );
    private $_client;
    
    private $_password;
    
    
    private $_amount;
    
    private $_currency;
    
    
    private $_card_number;
    
    private $_card_name;
    
    
    private $_card_expiry_date;
    
    private $_card_start_date;
    
    private $_card_issue_number;
    
    
    private $_card_cv2;
    
    private $_street_address;
    
    
    private $_postcode;
    
    private $_standard_policy = 0;
    
    private $_test_mode = TRUE;
    
    private $_log_file_name;
    

    private $_response;
    
    
    private $_success = FALSE;
    

    
    private static $_TEST_CARD_NUMBERS = Array(
                        '4111111111111119'      => 'VISA',
                        '5431111111111111'      => 'MasterCard',
                        '371111111111114'       => 'Amex',
                        '36000000000008'        => 'Diners',
                        '4999999999999202'      => 'VISA(Declined)',
                    );
    
    
    function __construct($client, $password, $test_mode = TRUE)
    {
        $this->_client = $client;
        $this->_password = $password;
        $this->_test_mode = $test_mode;
        $this->_log_file_name = DPS_LOG_FILE_PREFIX.$this->_client.($test_mode? '_test' : '_live');
        
    }//end constructor
    
    
    

    
    public function setCardNumber($card_no)
    {
        $this->_card_number = $card_no;
        
    }//end setCardNumber()
    
    
    public function setCardName($name)
    {
        $this->_card_name = $name;
        
    }//end setCardNumber()
    

    public function setCardExpiryDate($month, $year)
    {
        $this->_card_expiry_date = $month.$year;
    }//end setCardExpiryDate()
    
    
    public function setCardStartDate($month, $year)
    {
        $this->_card_start_date = $month.$year;
        
    }//end setCardStartDate()
    
    
    public function setCardIssueNumber($issue_no)
    {
        $this->_card_issue_number = $issue_no;
        
    }//end setCardIssueNumber()
    

    public function setCardCV2($cv2)
    {
        $this->_card_cv2 = $cv2;
        
    }//end setCardCV2()

    
    public function setStreetAddress($address)
    {
        $this->_street_address = $address;
        
    }//end setStreetAddress()
    

    public function setPostcode($postcode)
    {
        $this->_postcode = $postcode;
        
    }//end setPostcode()
    
    
    
    
    
    
    public function setAmount($amount)
    {
        $this->_amount = sprintf('%01.2f',$amount);
        
    }//end setAmount()
    
    
    public function setCurrency($currency)
    {
        $this->_currency = $currency;
        
    }//end setCurrency()
    

    public function setStandardPolicy($policy)
    {
        $this->_standard_policy = $policy;
        
    }//end setStandardPolicy()
    
    
    function getResponse()
    {
        return $this->_response;

    }//end getResponse()
    
    
    
    public function process()
    {
        $this->_sendRequest();
        return $this->_success;
        
    }//end process()
    
    
    
    private function _sendRequest()
    {
        //log the request of the transaction
        $this->_logRequest();
        
        $success = TRUE;
        $client = $this->_test_mode ? self::$_test_account['username']: $this->_client;
        $password = $this->_test_mode ? self::$_test_account['password']: $this->_password;
        $enableAvs = ($this->_standard_policy != 0) ? 1 : 0;
        $cmdDoTxnTransaction = '';
        $cmdDoTxnTransaction .= "<Txn>";
        $cmdDoTxnTransaction .= "<PostUsername>$client</PostUsername>";
        $cmdDoTxnTransaction .= "<PostPassword>$password</PostPassword>"; #Insert your DPS Password here
        $cmdDoTxnTransaction .= "<Amount>$this->_amount</Amount>";
        $cmdDoTxnTransaction .= "<InputCurrency>$this->_currency</InputCurrency>";
        $cmdDoTxnTransaction .= "<CardHolderName>$this->_card_name</CardHolderName>";
        $cmdDoTxnTransaction .= "<CardNumber>$this->_card_number</CardNumber>";
        $cmdDoTxnTransaction .= "<DateExpiry>$this->_card_expiry_date</DateExpiry>";
        $cmdDoTxnTransaction .= "<TxnType>Purchase</TxnType>";
        $cmdDoTxnTransaction .= "<MerchantReference></MerchantReference>";
        $cmdDoTxnTransaction .= "<Cvc2>$this->_card_cv2</Cvc2>";
        $cmdDoTxnTransaction .= "<EnableAvsData>".$enableAvs."</EnableAvsData>";
        $cmdDoTxnTransaction .= "<AvsAction>$this->_standard_policy</AvsAction>";
        $cmdDoTxnTransaction .= "</Txn>";
        
        $options = array(
                 'POST'           => 1,
                 'POSTFIELDS'     => $cmdDoTxnTransaction,
                 'RETURNTRANSFER' => 1,
                 'SSL_VERIFYPEER' => 1,//Needs to be included if no *.crt is available to verify SSL certificates
                 'SSL_VERIFYHOST' => 2,
                 'SSLVERSION'     => 3,
                );

        $details = fetch_url(self::$_URL, $options);

        $this->_parse_xml($details['response']);

        //log the transaction response
        $this->_logResponse();
        
    }//end _sendRequest()
    
    
    function _parse_xml($data)
    {
        $xml_parser = xml_parser_create();
        xml_parse_into_struct($xml_parser, $data, $vals, $index);
        xml_parser_free($xml_parser);
            
        $params = array();
        $level = array();
        foreach ($vals as $xml_elem) {
            if ($xml_elem['type'] == 'open') {
                if (array_key_exists('attributes',$xml_elem)) {
                    list($level[$xml_elem['level']],$extra) = array_values($xml_elem['attributes']);
                } 
                else {
                    $level[$xml_elem['level']] = $xml_elem['tag'];
                }
            }
            if ($xml_elem['type'] == 'complete') {
                $start_level = 1;
                $php_stmt = '$params';
                            
                while($start_level < $xml_elem['level']) {
                    $php_stmt .= '[$level['.$start_level.']]';
                    $start_level++;
                }
                $php_stmt .= '[$xml_elem[\'tag\']] = isset($xml_elem[\'value\']) ? $xml_elem[\'value\'] : \'\';';
                eval($php_stmt);
            }
        }
        
            
        $success = $params['TXN']['SUCCESS'];
        $responseTxt = $params['TXN']['RESPONSETEXT'];
        $DPSTxnRef = $params['TXN']['DPSTXNREF'];           
        $this->_success = $success == 1 ? 1 : FALSE;
         
        $this->_response['TRANSACTION'] = $DPSTxnRef;
        $this->_response['TIME'] = time();
        $this->_response['STATUS'] = $responseTxt;
        
    }


    
    public static function getTestCardNumbers()
    {
        return self::$_TEST_CARD_NUMBERS;
        
    }//end getTestCardNumbers()
    
    
    private function _logRequest()
    {
        $message = "\nRequest\n";
        $message .= 'Card holder name: '.$this->_card_name."\n";
        $message .= 'Card number: '.substr($this->_card_number, -4)."\n";
        $message .= 'Amount: '.$this->_amount.' '.$this->_currency."\n";
        $this->_log($message);
        
    }//end _logRequest()
    
    
    private function _logResponse()
    {
        $message = "\nResponse\n";
        $message .= 'Transaction: '.$this->_response['TRANSACTION']."\n";
        $message .= 'Time: '.$this->_response['TIME']."\n";
        $message .= 'Status: '.$this->_response['STATUS']."\n";
        $this->_log($message);
        
    }//end _logResponse()
    
    
    private function _log($message, $level = E_USER_NOTICE, $encode=FALSE)
    {
        log_write($message, $this->_log_file_name, $level, $encode);
        
    }//end log()
    
    

    
}//end class

?>