Social Share Buttons PHP CODES?

Question

PHP

What php codes to use for all social sites (in particular: vk, classmates, and google plus)
It is advisable to share the information of a certain page with its information, and not just a link to the site ... or it depends already on social sites =) I note , the codes are different after the link with a question mark ... I would just like the function to be feasible.
For example, the Twitter code looks like this for me:

<a target="_blank" class="share-button" href="<?php echo esc_url( sprintf( 'http://www.twitter.com?status=%s', urlencode( $message ) ) ); ?>"><i class="fa fa-twitter-square"></i></a>

And by the type of this code, it suits me quite well for other buttons))))

Answer 1

To share images, you must have OpenGraph configured
read - habrahabr.ru/company/softline/blog/144946

Answer 2

habrahabr.ru/post/250021
PS: How annoying when they say "php code " .