首先，需要在facebook创建一个APP，创建方法见https://developers.facebook.com/，APP有一项是填写Domain的，这里填写你website的Domain。（APP是绑定domain的，不能乱填）
然后就可以使用facebook comments plugins。
使用facebook comments plugins，可以在页面中插入facebook comments。
生成code方法：https://developers.facebook.com/docs/plugins/comments
例如：有一个页面是 ，在这个页面中插入以下代码便可以使用comments plugings。
<!-- include facebook js sdk --> <script src="//connect.facebook.net/en_GB/all.js#xfbml=1&appId=这里填写APPID"></script> <!-- comments plugins --> <fb:comments colorscheme="light" numposts="4" href="https://www.example.com/" fb-xfbml-state="rendered"></fb:comments>
在页面上显示如下
读取页面的分享总数与评论总数
https://graph.facebook.com/?ids={YOUR_URL}
{YOUR_URL} 需要 urlencode
例如：https://graph.facebook.com/?ids=http%3A%2F%2F%2F
返回：
{ "https://www.example.com/": { "id": "https://www.example.com/", "shares": 399517, "comments": 392 } }
代码如下：
<?php $url = 'https://www.example.com/'; $api = 'https://graph.facebook.com/?ids='; $result = json_decode(file_get_contents($api.urlencode($url)), true); print_r($result); ?>
读取页面评论列表
https://graph.facebook.com/comments/?ids={YOUR_URL}
{YOUR_URL} 需要 urlencode
例如：https://graph.facebook.com/comments/?ids=http%3A%2F%2F%2F
返回：
{ "https://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": { "id": "100001638736612", "name": "L\u00e3 Minh" }, "message": "hi you", "can_remove": false, "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_remove": 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" } } } }
根据next的url再请求可以获取下一页的评论内容
代码如下：
<?php $url = 'https://www.example.com/'; $api = 'https://graph.facebook.com/comments/?ids='; $result = json_decode(file_get_contents($api.urlencode($url)), true); print_r($result); ?>
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