PayPal Issues

We have been developing our website for months using PayPal in the "sandbox" mode. It worked fine. Today I tried to make it go live, with no success.

I am using PPHttpPost php function. The response in $httpParsedResponseAr["ACK"] is "Failure". I know the credit card being used is good, the expiration date was correct, etc.

It MIGHT be that the parameters being used for UserID, Password & Signature are no longer valid. I realize those are different for live use than sandbox & I changed them accordingly.

Is there some code I can look at to determine the error true cause?

Thanks
function PPHttpPost($methodName_, $nvpStr_) {
	global $environment;
	global $res;
	// Set up your API credentials, PayPal end point, and API version.
	$API_UserName = urlencode($res['username']);
	$API_Password = urlencode($res['password']);
	$API_Signature = urlencode($res['signature']);
	$API_Endpoint = "https://api-3t.paypal.com/nvp";
	if("sandbox" === $environment || "beta-sandbox" === $environment) {
		$API_Endpoint = "https://api-3t.$environment.paypal.com/nvp";
	}
	$version = urlencode('51.0');
	// Set the curl parameters.
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $API_Endpoint);
	curl_setopt($ch, CURLOPT_VERBOSE, 1);
	// Turn off the server and peer verification (TrustManager Concept).
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_POST, 1);
	// Set the API operation, version, and API signature in the request.
	$nvpreq = "METHOD=$methodName_&VERSION=$version&PWD=$API_Password&USER=$API_UserName&SIGNATURE=$API_Signature$nvpStr_";
	// Set the request as a POST FIELD for curl.
	curl_setopt($ch, CURLOPT_POSTFIELDS, $nvpreq);
	// Get response from the server.
	$httpResponse = curl_exec($ch);
	if(!$httpResponse) {
		exit("$methodName_ failed: ".curl_error($ch).'('.curl_errno($ch).')');
	}
	// Extract the response details.
	$httpResponseAr = explode("&", $httpResponse);
	$httpParsedResponseAr = array();
	foreach ($httpResponseAr as $i => $value) {
		$tmpAr = explode("=", $value);
		if(sizeof($tmpAr) > 1) {
			$httpParsedResponseAr[$tmpAr[0]] = $tmpAr[1];
		}
	}
	if((0 == sizeof($httpParsedResponseAr)) || !array_key_exists('ACK', $httpParsedResponseAr)) {
		exit("Invalid HTTP Response for POST request($nvpreq) to $API_Endpoint.");
	}
	return $httpParsedResponseAr;
}

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Richard KortsAsked:
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h4hardyConnect With a Mentor Sr. Software EnginnerCommented:
for this you have to contact to paypal..sometime paypal also stopped the transaction for that particular account..you can try..

-- check the sandbox api username and password..can it active or not?

-- send the request to paypal with your code

let me know if i would help you.
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Ray PaseurConnect With a Mentor Commented:
I think my first approach would be to use var_dump() to see this: $httpResponse.  You will want to use "view source" to check the output.
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nanharbisonCommented:
Another tip about setting up a credit card transactions, many of the providers offer a fake credit card number to try for each of MC and Visa for you to try when you are going live. Maybe you already know this.
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coreybryantCommented:
Most companies use the same testing numbers, but you should be able to produce results with these Credit Card Testing Numbers.

Visa: 4111111111111111 or 4012888888881881
MasterCard: 5105105105105100 or 5555555555554444
Discover: 6011000990139424 or 6011111111111117
American Express: 371449635398431 or 378282246310005

The expiration date should not matter (provided it is not before August 2011).  Plus before submitted to Paypal (or any electronic payment gateway), you should check to see if it validates (How Credit Card Numbers Are Determined).  This will save you a transaction fee.
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Richard KortsAuthor Commented:
Be on the lookout for my next question.

PayPal is a nightmare.
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