Add a Facebook Comment Plugin instance tutorial _php instance on the PHP site page

First, you need to create an app on Facebook and create a way to see Https://developers.facebook.com/,APP there is an entry in domain that fills in your website domain. (app is bound to domain and cannot be filled in)
Then you can use Facebook comments plugins.

Using Facebook comments Plugins, you can insert Facebook comments on the page.
Generate Code Method: Https://developers.facebook.com/docs/plugins/comments

For example, there is a http://www.example.com/page where you can use comments Plugings to insert the following code into this page.

<!--include Facebook JS SDK--> 
<script id= "Facebook-jssdk src="//connect.facebook.net/en_gb/all.js# xfbml=1&appid= here fill in appId "></script> 
 
<!--comments Plugins--> 
<fb:comments Colorscheme= "Light" numposts= "4" height= "360px", "width=" 614px "href=" http://www.example.com/"fb-xfbml-state=" Rendered "class=" Fb_iframe_widget "></fb:comments> 

appear on the page as follows

Total number of pages shared and comments read

Https://graph.facebook.com/?ids={your_url} 

{Your_url} requires UrlEncode
For example: Https://graph.facebook.com/?ids=http%3A%2F%2Fwww.example.com%2F
Return:

{ 
  "http://www.example.com/": {" 
   id": "http://www.example.com/", 
   "shares": 399517, 
   "comments": 392 
  } 
} 

The code is as follows:

<?php 
$url = ' http://www.example.com/'; 
$api = ' https://graph.facebook.com/?ids= '; 
 
$result = Json_decode (file_get_contents ($api. UrlEncode ($url)), true); 
 
Print_r ($result); 
? > 

Read Page Comments List

Https://graph.facebook.com/comments/?ids={your_url} 

{Your_url} requires UrlEncode
For example: Https://graph.facebook.com/comments/?ids=http%3A%2F%2Fwww.example.com%2F
Return:

{"http://www.example.com/": {"comments": {"Data": [{"id": "395320319544_27462154", ' from ': {' id ': ' 100000223906701 ', ' name ': ' Thu\u1eadn Phan Thanh '}, ' message ' : "Hello moto", "Can_remove": false, "Created_time": "2013-10-07t10:01:40+0000", "Like_count": 1, "User_likes": false}, {"id": "395320319544_27877980", "from": {"I D ":" 100001638736612 "," name ":" L\u00e3 Minh "}," message ":" Hi "," Can_remove ": F Alse, "Created_time": "2013-11-13t02:57:01+0000", "Like_count": 4, "User_likes": false}  , {"id": "395320319544_27879381", "from": {"id": "100004229015145", "name": "Th\u00f9y Dung"}, "message": "Mg \u1ee7ng h\u1ed9 t\u1edb v\u1edbi nh\u1edb \u003c3", "Can_r 
        Emove ": false,"Created_time": "2013-11-13t05:38:12+0000", "Like_count": 3, "User_likes": false} ... ], "paging": {"cursors": {"after": "MjU0", "Before": "Mzk4"}, "Next": " 
 Https://graph.facebook.com/v1.0/395320319544/comments?limit=25&after=MjU0 "}}}}

The next page of comments can be retrieved based on the next URL

The code is as follows:

<?php 
$url = ' http://www.example.com/'; 
$api = ' https://graph.facebook.com/comments/?ids= '; 
 
$result = Json_decode (file_get_contents ($api. UrlEncode ($url)), true); 
 
Print_r ($result);