Payment Gateway using PHP

[sithkong]

Hello PHP developers,

I am a begining developer, and I am trying to setup the payment gateway from authorize.net using PHP.

 

I found a very good tutorial and read through the explanation also download the codes.

 

However, it does not seem to be working....I am wondering if I didn't do it correctly. I don't know if PHP talented developers out there could show me the correct ways, or tell what was wrong with the code I added....

 

<code>

class Authnet

{

private $login    = "7989SeRGCRr7";

private $transkey = "29ZvRs59mZh2C48A";

private $params  = array();

private $results  = array();

 

private $approved = false;

private $declined = false;

private $error    = true;

 

private $test;

private $fields;

private $response;

 

static $instances = 0;

 

public function __construct($test = false)

{

if (self::$instances == 0)

{

$this->test    = trim($test);

if ($this->test)

{

$this->url = "https://test.authorize.net/gateway/transact.dll";

}

else

{

$this->url = "https://secure.authorize.net/gateway/transact.dll";

}

$this->params['x_delim_data']    = "TRUE";

$this->params['x_delim_char']    = "|";

$this->params['x_relay_response'] = "FALSE";

$this->params['x_url']            = "FALSE";

$this->params['x_version']        = "3.1";

$this->params['x_method']        = "CC";

$this->params['x_type']          = "AUTH_CAPTURE";

$this->params['x_login']          = $this->login;

$this->params['x_tran_key']      = $this->transkey;

 

self::$instances++;

}

else

{

return false;

}

}

 

public function transaction($cardnum, $expiration, $amount, $cvv = "", $invoice = "", $tax = "")

{

$this->params['x_card_num']  = trim($cardnum);

$this->params['x_exp_date']  = trim($expiration);

$this->params['x_amount']    = trim($amount);

$this->params['x_po_num']    = trim($invoice);

$this->params['x_tax']      = trim($tax);

$this->params['x_card_code'] = trim($cvv);

}

 

public function process($retries = 3)

{

$this->_prepareParameters();

$ch = curl_init($this->url);

 

$count = 0;

while ($count < $retries)

{

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, rtrim($this->fields, "& "));

$this->response = curl_exec($ch);

$this->_parseResults();

if ($this->getResultResponseFull() == "Approved")

{

$this->approved = true;

$this->declined = false;

$this->error    = false;

break;

}

else if ($this->getResultResponseFull() == "Declined")

{

$this->approved = false;

$this->declined = true;

$this->error    = false;

break;

}

$count++;

}

curl_close($ch);

}

 

private function _parseResults()

{

$this->results = explode("|", $this->response);

}

 

public function setParameter($param, $value)

{

$param                = trim($param);

$value                = trim($value);

$this->params[$param] = $value;

}

 

public function setTransactionType($type)

{

$this->params['x_type'] = strtoupper(trim($type));

}

 

private function _prepareParameters()

{

foreach($this->params as $key => $value)

{

$this->fields .= "$key=" . urlencode($value) . "&";

}

}

 

public function getResultResponse()

{

return $this->results[0];

}

 

public function getResultResponseFull()

{

$response = array("", "Approved", "Declined", "Error");

return $response[$this->results[0]];

}

 

public function isApproved()

{

return $this->approved;

}

 

public function isDeclined()

{

return $this->declined;

}

 

public function isError()

{

return $this->error;

}

 

public function getResponseText()

{

return $this->results[3];

}

 

public function getAuthCode()

{

return $this->results[4];

}

 

public function getAVSResponse()

{

return $this->results[5];

}

 

public function getTransactionID()

{

return $this->results[6];

}

}

 

//process the payment

//user information variables

//$price = $_POST['_CC_PRICE'];

//$card_number = $_POST['_CC_Number'];

//$card_type = $_POST['_CC_Type'];

//$ex_month = $_POST['_CC_ExpDateMonth'];

//$ex_year = $_POST['_CC_ExpDateYear'];

//$fname_oncard = $_POST['_CC_FirstName'];

//$lname_oncard = $_POST['_CC_LastName'];

//$security_code = $_POST['_CC_Code'];

 

$tax = 0;

$cardnum = $_POST['_CC_Number'];

$expiration = $_POST['_CC_ExpDateMonth'] . $_POST['_CC_ExpDateYear'];

$amount = 49.95;

$invoice = rand(0000,10000);

$cvv = $_POST['_CC_Code'];

//$total = 49.95;

$fname_oncard = $_POST['_CC_FirstName'];

$lname_oncard = $_POST['_CC_LastName'];

 

$payment = new Authnet(false);

$payment->transaction($cardnum, $expiration,, $amount, $cvv, $invoice, $tax);

//$payment->setParameter("x_address", $business_address);

//$payment->setParameter("x_zip", $business_zipcode);

$payment->setParameter("x_first_name", $fname_oncard);

$payment->setParameter("x_last_name", $lname_oncard);

$payment->process();

 

if ($payment -> isApproved()) {

  // Display a printable receipt

  echo "<table widh=500 align=center border=1>";

  echo "<tr><td>";

  echo "<p>Your payment has been processed successfully!</p>";

  echo "<p>Below your receipt</p>";

  echo "<p>Price: $49.95 <br /></p>";

  echo "</td></tr>";

  echo "</table>";

 

} else if ($payment -> isDeclined()) {

  $reason = $payment -> getResponseText();

  // As for another form of payment

  echo "<p>Your payment is not approved. Please contact sithkong@gmail.com</p>";

} else {

  // Ask the merchant to call us

 

}

</code>

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