php - Official PayPal IPN Issue -

after bit of googling noticed paypal using new ipn class got github: https://github.com/paypal/ipn-code-samples

i installed it, , started passing post variables it:

paypalipn.php

<?php  class paypalipn {      /**      * @var bool $use_sandbox indicates if sandbox endpoint used.      */     private $use_sandbox = true;     /**      * @var bool $use_local_certs indicates if local certificates used.      */     private $use_local_certs = true;      /** production postback url */     const verify_uri = 'https://ipnpb.paypal.com/cgi-bin/webscr';     /** sandbox postback url */     const sandbox_verify_uri = 'https://ipnpb.sandbox.paypal.com/cgi-bin/webscr';       /** response paypal indicating validation successful */     const valid = 'verified';     /** response paypal indicating validation failed */     const invalid = 'invalid';      /**      * sets ipn verification sandbox mode (for use when testing,      * should not enabled in production).      * @return void      */     public function usesandbox()     {         $this->use_sandbox = true;     }      /**      * sets curl use php curl's built in certs (may required in      * environments).      * @return void      */     public function usephpcerts()     {         $this->use_local_certs = false;     }      /**      * determine endpoint post verification data to.      * @return string      */     public function getpaypaluri()     {         if ($this->use_sandbox) {             return self::sandbox_verify_uri;         } else {             return self::verify_uri;         }     }      /**      * verification function      * sends incoming post data paypal using curl library.      *      * @return bool      * @throws exception      */     public function verifyipn()     {         if (!count($_post)) {             throw new exception("missing post data");         }          $raw_post_data = file_get_contents('php://input');         $raw_post_array = explode('&', $raw_post_data);         $mypost = array();         foreach ($raw_post_array $keyval) {             $keyval = explode('=', $keyval);             if (count($keyval) == 2) {                 // since not want plus in datetime string encoded space, manually encode it.                 if ($keyval[0] === 'payment_date') {                     if (substr_count($keyval[1], '+') === 1) {                         $keyval[1] = str_replace('+', '%2b', $keyval[1]);                     }                 }                 $mypost[$keyval[0]] = urldecode($keyval[1]);             }         }          // build body of verification post request, adding _notify-validate command.         $req = 'cmd=_notify-validate';         $get_magic_quotes_exists = false;         if (function_exists('get_magic_quotes_gpc')) {             $get_magic_quotes_exists = true;         }         foreach ($mypost $key => $value) {             if ($get_magic_quotes_exists == true && get_magic_quotes_gpc() == 1) {                 $value = urlencode(stripslashes($value));             } else {                 $value = urlencode($value);             }             $req .= "&$key=$value";         }         print "<pre>"; print_r($req); print "</pre>";         // post data paypal, using curl. throw exceptions if errors occur.         $ch = curl_init($this->getpaypaluri());         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);          // required if server missing global cert bundle, or using outdated one.         if ($this->use_local_certs) {             curl_setopt($ch, curlopt_cainfo, __dir__ . "/cert/cacert.pem");         }          curl_setopt($ch, curlopt_forbid_reuse, 1);         curl_setopt($ch, curlopt_connecttimeout, 30);         curl_setopt($ch, curlopt_httpheader, array('connection: close'));         $res = curl_exec($ch);         print_r($res);         if (!($res)) {             $errno = curl_errno($ch);             $errstr = curl_error($ch);             curl_close($ch);             throw new exception("curl error: [{$errno}] [{$errstr}]");         }          $info = curl_getinfo($ch);         $http_code = $info['http_code'];         if ($http_code != 200) {             throw new exception("paypal responded http code {$http_code}");         }         curl_close($ch);          // check if paypal verifies ipn data, , if so, return true.         if ($res == self::valid) {             return true;         } else {             return false;         }     } } ?> 

to access , test i'm doing:

<?php namespace listener;  ini_set('display_errors', 1); error_reporting(-1);  require('paypalipn.php'); use \paypalipn; $ipn = new paypalipn();  // use sandbox endpoint during testing. $ipn->usesandbox();  $verified = $ipn->verifyipn();  if ($verified) {     print("verified");     exit(0);     /*     * process ipn     * list of variables available here:     * https://developer.paypal.com/webapps/developer/docs/classic/ipn/integration-guide/ipnandpdtvariables/     */ }  // reply empty 200 response indicate paypal ipn received correctly. header("http/1.1 200 ok");  ?> 

on testing getting curl errors thrown:

fatal error: uncaught exception: curl error: [0] [] in /home/admin/web/syte.com.com/public_html/gateway/paypalipn.php:127 stack trace: #0 /home/admin/web/syte.com/public_html/gateway/paypal.php(13): paypalipn->verifyipn() #1 {main} thrown in /home/admin/web/syte.com/public_html/gateway/paypalipn.php on line 127

on researching, error code "0" not error seems, means went ok (from have read)

does see glaring errors in code @ all? few threads on other forums have seen, there no posted solution, help.