Hello Guy i have integrated in my application "paypal ipn" you can find out the way how to integrate to your application
i think you can do, hope help you :)
<?php
class paypal_ipn_handler {
var $last_error; // holds the last error encountered
var $ipn_log; // bool: log IPN results to text file?
var $ipn_log_file; // filename of the IPN log
var $ipn_response; // holds the IPN response from paypal
var $ipn_data = array(); // array contains the POST values for IPN
var $fields = array(); // array holds the fields to submit to paypal
var $sandbox_mode = false;
function paypal_ipn_handler()
{
$this->paypal_url = 'https://www.paypal.com/cgi-bin/webscr';
$this->last_error = '';
$this->ipn_log_file = WP_ESTORE_PATH.'ipn_handle_debug.log';
$this->ipn_response = '';
}
function formatMoney($number, $fractional=false)
{
if ($fractional) {
$number = sprintf('%.2f', $number);
}
while (true) {
$replaced = preg_replace('/(-?\d+)(\d\d\d)/', '$1,$2', $number);
if ($replaced != $number) {
$number = $replaced;
} else {
break;
}
}
return $number;
}
function validate_ipn()
{
// parse the paypal URL
$url_parsed=parse_url($this->paypal_url);
// generate the post string from the _POST vars aswell as load the _POST vars into an arry
$post_string = '';
foreach ($_POST as $field=>$value) {
$this->ipn_data["$field"] = $value;
$post_string .= $field.'='.urlencode(stripslashes($value)).'&';
}
$this->post_string = $post_string;
$this->debug_log('Post string : '. $this->post_string,true);
$post_string.="cmd=_notify-validate"; // append ipn command
// open the connection to paypal
if($this->sandbox_mode){//connect to PayPal sandbox
$uri = 'ssl://'.$url_parsed['host'];
$port = '443';
$fp = fsockopen($uri,$port,$err_num,$err_str,30);
}
else{//connect to live PayPal site using standard approach
$fp = fsockopen($url_parsed['host'],"80",$err_num,$err_str,30);
}
if(!$fp)
{
// could not open the connection. If loggin is on, the error message
// will be in the log.
$this->debug_log('Connection to '.$url_parsed['host']." failed. fsockopen error no. $errnum: $errstr",false);
return false;
}
else
{
// Post the data back to paypal
fputs($fp, "POST $url_parsed[path] HTTP/1.1\r\n");
fputs($fp, "Host: $url_parsed[host]\r\n");
fputs($fp, "Content-type: application/x-www-form-urlencoded\r\n");
fputs($fp, "Content-length: ".strlen($post_string)."\r\n");
fputs($fp, "Connection: close\r\n\r\n");
fputs($fp, $post_string . "\r\n\r\n");
// loop through the response from the server and append to variable
while(!feof($fp)) {
$this->ipn_response .= fgets($fp, 1024);
}
fclose($fp); // close connection
$this->debug_log('Connection to '.$url_parsed['host'].' successfuly completed.',true);
}
if (eregi("VERIFIED",$this->ipn_response))
{
// Valid IPN transaction.
$this->debug_log('IPN successfully verified.',true);
return true;
}
else
{
// Invalid IPN transaction. Check the log for details.
$this->debug_log('IPN validation failed.',false);
return false;
}
}
function validate_and_dispatch_product()
{
//do print your paypal ipn_data array
$this->debug_log(print_r($this->ipn_data),true);
return true;
}
function debug_log($message,$success,$end=false)
{
if (!$this->ipn_log) return; // is logging turned off?
// Timestamp
$text = '['.date('m/d/Y g:i A').'] - '.(($success)?'SUCCESS :':'FAILURE :').$message. "\n";
if ($end) {
$text .= "\n------------------------------------------------------------------\n\n";
}
// Write to log
$fp=fopen($this->ipn_log_file,'a');
fwrite($fp, $text );
fclose($fp);
}
}
// Start of IPN handling (script execution)
$ipn_handler_instance = new paypal_ipn_handler();
if ($ipn_handler_instance->validate_ipn())
{
$ipn_handler_instance->debug_log('Creating product Information to send.',true);
if(!$ipn_handler_instance->validate_and_dispatch_product())
{
$ipn_handler_instance->debug_log('IPN product validation failed.',false);
}
}