Hello all,

My credit card processor has decided to build another payment gateway so i have to make some changes to. So they sent me the following php code

PHP Code:

class dotGeneratorGateway
{
    var $dataAll;
    var $response;
    function dotGeneratorGateway()
    {
        unset ($this->dataAll);
        $this->dataAll = array(
        'amount'      => null,
        'curr'        => null,
        'invoice_id'  => null,
        'order_desc'  => null,
        'merch_id'    => null,
        'timestamp'   => null,
        'nonce'       => null,
        );
    }
    function romcard_mac($data, $key = NULL)
    {
        $str = NULL;
        foreach($data as $d)
        {
            if($d === NULL || strlen($d) == 0)
            $str .= '-';
            else
            $str .= strlen($d) . $d;
        }
        if($key === NULL)
        $key = "00112233445566778899AABBCCDDEEFF";
        $key = pack('H*', $key);

        return $this->hmacsha1($key, $str);
    }
    function hmacsha1($key,$data) {
        $blocksize = 64;
        $hashfunc  = 'md5';
        if(strlen($key) > $blocksize)
        $key = pack('H*', $hashfunc($key));
        $key  = str_pad($key, $blocksize, chr(0x00));
        $ipad = str_repeat(chr(0x36), $blocksize);
        $opad = str_repeat(chr(0x5c), $blocksize);
        $hmac = pack('H*', $hashfunc(($key ^ $opad) . pack('H*', $hashfunc(($key ^ $ipad) . $data))));
        return bin2hex($hmac);
    }
    function getClientIp()
    {
        $private_net_ip_masks = array( '10.0.0.', '192.168.', '127.0.0.', '172.16.0.' );
        if( isset($_SERVER['HTTP_X_FORWARDED_FOR']) && $_SERVER['HTTP_X_FORWARDED_FOR'] != '' )
        {
            $ipStrings = explode( ',',$_SERVER['HTTP_X_FORWARDED_FOR']);
            foreach($ipStrings as $k => $v)
            {
                if( empty($v) )
                {
                    unset( $ipStrings[$k] );
                }
                else
                {
                    if(!isset($ipString)) $ipString = $v;
                }
            }
        }
        if( isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] != '' )
        {
            $ipStrings[] = $_SERVER['REMOTE_ADDR'];
            if(!isset($ipString)) $ipString = $_SERVER['REMOTE_ADDR'];
        }
        foreach($ipStrings as $k1 => $ip)
        {
            foreach($private_net_ip_masks as $k2 => $pip)
            {
                if(strpos($ip, $pip) === 0)
                {
                    unset($ipStrings[$k1]);
                    break;
                }
            }
        }
        return implode(",",$ipStrings);
    }

    function startTransaction($dMerchant_id, $dAmount, $dCurrency, $dInvoice_id, $dInvoice_description)
    {

        $defined_vars = get_defined_vars();
        $this->dotGeneratorGateway();
        $this->dataAll['amount']=$dAmount;
        $this->dataAll['curr']=$dCurrency;
        $this->dataAll['invoice_id']=$dInvoice_id;//str_pad($dInvoice_id, 7, '0', STR_PAD_LEFT)
        $this->dataAll['order_desc']=$dInvoice_description;
        $this->dataAll['merch_id']=$dMerchant_id;
        $this->dataAll['timestamp']=gmdate("YmdHis");
        $this->dataAll['nonce']=md5(microtime() . mt_rand());
        $this->dataAll['fp_hash']=strtoupper($this->romcard_mac($this->dataAll));
        $this->dataAll['ip_client']=$this->getClientIp();
        $formvars= array();
        $host = "host";
        $port = 443;
        $path = "/tdsprocess/verify.php";
        foreach($this->dataAll AS $key => $val){
            $poststring .= urlencode($key) . "=" . urlencode($val) . "&";
        }
        $poststring = substr($poststring, 0, -1);
        $fp = fsockopen("ssl://".$host, $port, $errno, $errstr, $timeout = 30);
        if(!$fp){
        echo "$errstr ($errno)\n";

        }else{

            fputs($fp, "POST $path HTTP/1.1\r\n");
            fputs($fp, "Host: $host\r\n");
            fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
            fputs($fp, "Content-length: ".strlen($poststring)."\r\n");
            fputs($fp, "Connection: close\r\n\r\n");
            fputs($fp, $poststring . "\r\n\r\n");
            $res="";
            while(!feof($fp)) {
                $res.=fgets($fp, 4096);
            }
            fclose($fp);
        }
        echo $res;
    }
} 


So i have to call the function startTransaction something like this :

PHP Code:

startTransaction('my_company', $amount, 'USD', 'invoice_nr', 'NONE'); 


The question is where ?
I tried to insert this php code in my php form but when i call the function outside the class { } it says that the function doesn`t exist. If i remove the class { } so it will remain just the functions it will give me an error with those vars at the beggining. Does someone know how can i call the function?

Its called object oriented programming and PHP uses it poorly (at least in 4), here is what you need to do though.

PHP Code:

<?php
// Create an new instance of the dotGeneratorGateway object (class)
$objGateway = new dotGeneratorGateway;

// Now we can access this objects methods through the object we just created
$objGateway->startTransaction('my_company', $amount, 'USD', 'invoice_nr', 'NONE');

?>