如何使用fopen而不是fsockopen

Question

I'm using a PHP script to check for a PayPal Instant Payment Notification (IPN) and my hosting provider (1&1) doesn't allow the use of fsockopen() and pfsockopen(), but they do let you use fopen(). Here's the fsockopen code:

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

I have tried other methods, such as putting in a replacement php.ini file, but they haven't worked. My question is how you would convert this statement to use fopen, giving the same result, e.g.

$fp = fopen(...);

Thanks!

Answer 1

1&1 is big hoster and they probably blocked access to other sites, because too many users tried to DoS other servers with their 1&1 PHP scripts.

First: Check if your web hosting got access to SSL sites:

<?php
echo file_get_contents('https://mail.google.com');

When you open this script in your web browser, it should redirect you to gmail page. Error/white page = access to SSL (or all sites) is blocked.

Second:

Think about other paypal solution like 'notification' (turn off IPN on paypal site to make it work!). This method does not require any HTTP/SSL connection to any other server. Paypal just open your site after payment with information about who/when/how much paid. It's enough for most of websites. Example:

At one page I made form that I send to paypal with attribute 'notify_url': https://github.com/gesior/Gesior2012/blob/TFS-1.0/pages/paypal.php

At second page I made code that handles PayPal notifications about payments: https://github.com/gesior/Gesior2012/blob/TFS-1.0/pages/paypal_report.php

[Paypal notify server got some specified IPs, so no one can fake notification]