PHP & Paypal

[ja_dorado]

Hello.

I have tried to use PHP & Paypal together however am having some trouble with the SSL connection to get transaction details once the payment has been completed. From the Paypal website I have got this script which connects using the address bar variable "tx" which is the transaction number. The script then posts this to Paypal and gets back either "SUCCESS" or "FAIL", and if SUCCESS a list of variables such as payer_email and first_name etc.

 

$req = 'cmd=_notify-synch';

$tx_token = $_GET['tx'];
$auth_token = "GX_sTf5bW3wxRfFEbgofs88nQxvMQ7nsI8m21rzNESnl_79ccFTWj2aPgQ0";
$req .= "&tx=$tx_token&at=$auth_token";

// post back to PayPal system to validate
$header .= "POST /cgi-bin/webscr HTTP/1.0\r\n";
$header .= "Content-Type: application/x-www-form-urlencoded\r\n";
$header .= "Content-Length: " . strlen($req) . "\r\n\r\n";
$fp = fsockopen ('www.paypal.com', 80, $errno, $errstr, 30);
// If possible, securely post back to paypal using HTTPS
// Your PHP server will need to be SSL enabled
// $fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30);

if (!$fp) {
// HTTP ERROR
} else {
fputs ($fp, $header . $req);
// read the body data
$res = '';
$headerdone = false;
while (!feof($fp)) {
$line = fgets ($fp, 1024);
if (strcmp($line, "\r\n") == 0) {
// read the header
$headerdone = true;
}
else if ($headerdone)
{
// header has been read. now read the contents
$res .= $line;
}
}

// parse the data
$lines = explode("\n", $res);
$keyarray = array();
if (strcmp ($lines[0], "SUCCESS") == 0) {
for ($i=1; $i<count($lines);$i++){
list($key,$val) = explode("=", $lines[$i]);
$keyarray[urldecode($key)] = urldecode($val);
}
// check the payment_status is Completed
// check that txn_id has not been previously processed
// check that receiver_email is your Primary PayPal email
// check that payment_amount/payment_currency are correct
// process payment
$firstname = $keyarray['first_name'];
$email = $keyarray['payer_email'];

echo ("<h2>Thank you for your purchase " . $firstname . "!</h2>");
echo ("Your Email: " . $email . "");
}
else if (strcmp ($lines[0], "FAIL") == 0) {
// log for manual investigation
}

}

fclose ($fp);

 

Thanks in advance for help from anyone.

 

 

- James

[lachild]

The port in the fsockopen is incorrect.  SSL transaction generally occur on port 443.  I generally use Curl for these types of requests, but according to the manual on fsockopen you'll also need to append your url to include SSL...  so you new fsockopen line should read:

 

$fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30);