How to make authorization through social networks to add comments?

Question

PHP

Hello everyone , please
help me solve this problem.
You need to make authorization through social networks, so that you can leave comments.
Can I somehow use this snippet to implement all this? if so, how?
Trying to use HybridAuth but getting errors with facebook ([2017-01-09 16:06:06] (ERROR @ /home/c/cq93014/kompit/public_html/core/components/hybridauth/model/hybridauth/hybridauth.class. php : 74) [HybridAuth] Endpoint: Error while trying to init Hybrid_Auth: You cannot access this page directly.).
I have not tried it through VK yet, as there are some problems with the account (I will check tomorrow).
Thank you in advance!

Answer 1

You have to watch how you are doing.
I'm building this site right now. Everything works fine.
Checked Vk, G+, Yandex, Facebook
HybridAuth+Tickets
Contacts in profile. Get in touch if you can't do it yourself.

Answer 2

If through VK, then everything is available in the documentation described