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- <?php
- // STEP 1: Read POST data
- // reading posted data from directly from $_POST causes serialization
- // issues with array data in POST
- // reading raw POST data from input stream instead.
- $raw_post_data = file_get_contents('php://input');
- $raw_post_array = explode('&', $raw_post_data);
- $myPost = array();
- foreach ($raw_post_array as $keyval) {
- $keyval = explode ('=', $keyval);
- if (count($keyval) == 2)
- $myPost[$keyval[0]] = urldecode($keyval[1]);
- }
- // read the post from PayPal system and add 'cmd'
- $req = 'cmd=_notify-validate';
- if(function_exists('get_magic_quotes_gpc')) {
- $get_magic_quotes_exists = true;
- }
- foreach ($myPost as $key => $value) {
- if($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) {
- $value = urlencode(stripslashes($value));
- } else {
- $value = urlencode($value);
- }
- $req .= "&$key=$value";
- }
- // STEP 2: Post IPN data back to paypal to validate
- $ch = curl_init('https://www.paypal.com/cgi-bin/webscr');
- curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
- curl_setopt($ch, CURLOPT_POST, 1);
- curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
- curl_setopt($ch, CURLOPT_POSTFIELDS, $req);
- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 1);
- curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
- curl_setopt($ch, CURLOPT_FORBID_REUSE, 1);
- curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close'));
- // In wamp like environments that do not come bundled with root authority certificates,
- // please download 'cacert.pem' from "http://curl.haxx.se/docs/caextract.html" and set the directory path
- // of the certificate as shown below.
- // curl_setopt($ch, CURLOPT_CAINFO, dirname(__FILE__) . '/cacert.pem');
- if( !($res = curl_exec($ch)) ) {
- // error_log("Got " . curl_error($ch) . " when processing IPN data");
- curl_close($ch);
- exit;
- }
- curl_close($ch);
- // STEP 3: Inspect IPN validation result and act accordingly
- if (strcmp ($res, "VERIFIED") == 0) {
- // check whether 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
- // assign posted variables to local variables
- $item_name = $_POST['item_name'];
- $item_number = $_POST['item_number'];
- $payment_status = $_POST['payment_status'];
- $payment_amount = $_POST['mc_gross'];
- $payment_currency = $_POST['mc_currency'];
- $txn_id = $_POST['txn_id'];
- $receiver_email = $_POST['receiver_email'];
- $payer_email = $_POST['payer_email'];
- } else if (strcmp ($res, "INVALID") == 0) {
- // log for manual investigation
- }
- ?>
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