Many, many thanks. I am, however, running into a 99 error now, I've been changing variables left and right but to no avail. Any thoughts? Code below:
<?php
// the parameters for the payment can be configured here
// the API Login ID and Transaction Key must be replaced with valid values
$loginID = "developer test login ID";
$transactionKey = "developer testtransaction Key";
//$proc_final_total is an XX.XX formatted number determined earlier on the page.
$amount = $proc_final_total;
$description = "Sample Transaction";
$label = "Submit Payment"; // The is the label on the 'submit' button
$testMode = "false";
$url = "https://test.authorize.net/gateway/transact.dll";
// If an amount or description were posted to this page, the defaults are overidden
if (array_key_exists("amount",$_REQUEST))
{ $amount = $_REQUEST["amount"]; }
if (array_key_exists("amount",$_REQUEST))
{ $description = $_REQUEST["description"]; }
// an invoice is generated using the date and time
$invoice = date(YmdHis);
// a sequence number is randomly generated
$sequence = rand(1, 1000);
// a timestamp is generated
$timeStamp = time();
if (!function_exists('mhash'))
{
if (!defined('MHASH_MD5')) define('MHASH_MD5', 1);
function mhash($hash, $data, $key)
{
if ($hash == MHASH_MD5)
{
// RFC 2104 HMAC implementation for php.
// Creates an md5 HMAC.
// Eliminates the need to install mhash to compute a HMAC
// Hacked by Lance Rushing
$b = 64; // byte length for md5
if (strlen($key) > $b) {
$key = pack("H*",md5($key));
}
$key = str_pad($key, $b, chr(0x00));
$ipad = str_pad('', $b, chr(0x36));
$opad = str_pad('', $b, chr(0x5c));
$k_ipad = $key ^ $ipad ;
$k_opad = $key ^ $opad;
return md5($k_opad . pack("H*",md5($k_ipad . $data)));
}
}
}
$fingerprint = bin2hex(mhash(MHASH_MD5, $loginID . "^" . $sequence . "^" . $timeStamp . "^" . $amount . "^", $transactionKey));
?>
<form method='post' action='<?php echo $url; ?>' >
<!-- Additional fields can be added here as outlined in the SIM integration
guide at: http://developer.authorize.net -->
<input type='hidden' name='x_login' value='<?php echo $loginID; ?>' />
<input type='hidden' name='x_amount' value='<?php echo $amount; ?>' />
<input type='hidden' name='x_description' value='<?php echo $description; ?>' />
<input type='hidden' name='x_invoice_num' value='<?php echo $invoice; ?>' />
<input type='hidden' name='x_fp_sequence' value='<?php echo $sequence; ?>' />
<input type='hidden' name='x_fp_timestamp' value='<?php echo $timeStamp; ?>' />
<input type='hidden' name='x_fp_hash' value='<?php echo $fingerprint; ?>' />
<input type='hidden' name='x_test_request' value='<?php echo $testMode; ?>' />
<input type='hidden' name='x_show_form' value='PAYMENT_FORM' />
<input type='submit' value='<?php echo $label; ?>' />
</form>
