What is the error, php when getting data?

Question

PHP

Hello, I'm trying to receive SMS from the GOIP 8 control panel, on Habré I found an example of how to do it
habr.com/ru/post/258561/
Replaced the data:
Address and password.
I created a php document and pasted the code there.
transit.shastun.agency/sms/index.php
the result is this, what I did wrong.

Answer 1

after

#получаем сырые данные - html
$data = file_get_contents($goip_addr."/default/en_US/tools.html?type=sms_inbox", false, $context);

insert
var_dump($data);

Answer 2

Use Xdebug.