ipn.php

<?php include("gateway-config.php");
$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]);
}
$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) {
		$value = urlencode(stripslashes($value));
	} else {
		$value = urlencode($value);
	}
	$req .= "&$key=$value";
}
  
$paypalURL = PAYPAL_URL;
$txn_id='ipnfalse'; 
  
$ch = curl_init($paypalURL);
if ($ch == FALSE) {
	return FALSE;
	  
}
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_SSLVERSION, 6);
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_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Connection: Close', 'User-Agent: company-name'));
$res = curl_exec($ch);
$tokens = explode("\r\n\r\n", trim($res));
$res = trim(end($tokens));
if (strcmp($res, "VERIFIED") == 0 || strcasecmp($res, "VERIFIED") == 0) {
	$item_number	= $_POST['item_number'];
	$txn_id 		= $_POST['txn_id'];
	$payment_gross 	= $_POST['mc_gross'];
	$currency_code 	= $_POST['mc_currency'];
	$payment_status = $_POST['payment_status'];
	$payer_email=$_POST['payer_email'];
    $firstname=$_POST['first_name'];
    $lastname=$_POST['last_name'];   
      $payer_id=$_POST['payer_id']; 
        $address_country=$_POST['address_country']; 
        //count transaction row in database using txn id
        // check duplicacy
	if($pay_count > 0){
	   
		exit();
	}else{
	// insert data into database
	}

}
header('HTTP/1.1 200 OK');
//Techno Smarter - https://technosmarter.com/php/tutorial