├── README.md
├── include
    ├── config.php
    ├── connect.php
    └── functions.php
└── rss.php


/README.md:
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1 | Generate Facebook instant articles RSS feed using core PHP
2 | 
3 | Feel free to contact us @ <a href="mailto:nishit.maheta@mobiosolutions.com">nishit.maheta@mobiosolutions.com</a>
4 | 


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/include/config.php:
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1 | <?php
2 | // change the values to fit yours
3 | $db_config = array(
4 | 	'host' => 'localhost',
5 | 	'user' => 'videolim_db',
6 | 	'pass' => 'e,6T2,6vEZer',
7 | 	'name' => 'videolim_db'
8 | );


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/include/connect.php:
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 1 | <?php
 2 | // mysqli connect method
 3 | $mysqli = new mysqli($db_config['host'], $db_config['user'], $db_config['pass'], $db_config['name']);
 4 | /* check connection */
 5 | if (mysqli_connect_errno()) {
 6 |     printf("Connect failed: %s\n", mysqli_connect_error());
 7 |     exit();
 8 | }
 9 | // set charset to UTF-8
10 | $mysqli->set_charset("utf8");


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/include/functions.php:
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 1 | <?php
 2 | 
 3 | /*Generate url slug from post title
 4 | * @param string $text
 5 | *
 6 | * @return string 	
 7 | */
 8 | function slugify($text)
 9 | {
10 |   // replace non letter or digits by -
11 |   $text = preg_replace('~[^\pL\d]+~u', '-', $text);
12 | 
13 |   // transliterate
14 |   $text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);
15 | 
16 |   // remove unwanted characters
17 |   $text = preg_replace('~[^-\w]+~', '', $text);
18 | 
19 |   // trim
20 |   $text = trim($text, '-');
21 | 
22 |   // remove duplicate -
23 |   $text = preg_replace('~-+~', '-', $text);
24 | 
25 |   // lowercase
26 |   $text = strtolower($text);
27 | 
28 |   if (empty($text)) {
29 |     return 'n-a';
30 |   }
31 | 
32 |   return $text;
33 | }
34 | 
35 | /*Generate GUID for instant article
36 | *
37 | * @return string 	
38 | */
39 | function GUID()
40 | {
41 |     if (function_exists('com_create_guid') === true)
42 |     {
43 |         return trim(com_create_guid(), '{}');
44 |     }
45 | 
46 |     return sprintf('%04X%04X-%04X-%04X-%04X-%04X%04X%04X', mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(16384, 20479), mt_rand(32768, 49151), mt_rand(0, 65535), mt_rand(0, 65535), mt_rand(0, 65535));
47 | }
48 | 


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/rss.php:
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  1 | <?php
  2 |     header("Content-Type: application/rss+xml; charset=ISO-8859-1");
  3 |     // Above is the header to genearte rss xml feed
  4 | 
  5 |     /* Links to facebook developers guide pages
  6 | 
  7 |     https://developers.facebook.com/docs/instant-articles/get-started/overview
  8 |     https://developers.facebook.com/docs/instant-articles/reference
  9 | 
 10 |     */
 11 |     include('include/config.php');
 12 |     include('include/connect.php');
 13 |     include('include/functions.php');
 14 | 
 15 |     // Replace Query according to database structure to get all required data.
 16 |     $sql = "SELECT * FROM articles ORDER BY datetime limit 25";
 17 | 
 18 |     $query = $mysqli->query($sql);
 19 |    
 20 |     $rssfeed = '<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
 21 |     $rssfeed .= '<channel>';
 22 |     $rssfeed .= '<title>Instant Article RSS feed</title>';
 23 |     $rssfeed .= '<link>http://yourwebsite.org</link>';
 24 |     $rssfeed .= '<description>Instant Article RSS feed</description>';
 25 |     $rssfeed .= '<language>en-us</language>';
 26 |     $rssfeed .= '<copyright>Copyright (C) '.date("Y").' yourwebsite.org</copyright>';
 27 | 
 28 |     // Change variables accoring to database table fields
 29 | 	while ($row = $query->fetch_array()) {
 30 | 	    extract($row);
 31 | 	    $rssfeed .= '<item>';
 32 |         $rssfeed .= '<title>' . $title . '</title>';
 33 |         $rssfeed .= '<description>' . $details . '</description>';
 34 |         $rssfeed .= '<guid>' .GUID(). '</guid>';
 35 | 
 36 |         // Replace URL according to website url patterns
 37 |         $rssfeed .= '<link>http://yourwebsite.org/' . $id . '/'.slugify($title).'</link>';
 38 |         
 39 |         $rssfeed .= '<pubDate>' . date("D, d M Y H:i:s O", strtotime($datetime)) . '</pubDate>';
 40 |         $rssfeed .= '<author>' .$user_title. '</author>';
 41 | 
 42 |         // Here is the link https://developers.facebook.com/docs/instant-articles/example-articles which explains the differen options for content body
 43 |         $rssfeed .= '<content:encoded>';
 44 |         $rssfeed .= '<![CDATA[';
 45 |         $rssfeed .= '<!doctype html>';
 46 |         $rssfeed .= '<html lang="en" prefix="op: http://media.facebook.com/op#">';
 47 |         $rssfeed .= '<head>';
 48 |         $rssfeed .= '<meta charset="utf-8">';   
 49 |         $rssfeed .= '<link rel="canonical" href="http://yourwebsite.org/video/' . $id . '/'.slugify($title).'">';
 50 |         $rssfeed .= '<meta property="op:markup_version" content="v1.0">';
 51 |         $rssfeed .= '<meta property="og:title" content="' . $title . '">';
 52 |         $rssfeed .= '<meta property="og:description" content="' . $title . '">';
 53 |         $rssfeed .= '<meta property="og:image" content="http://yourwebsite.org/upload/videos/'.$thumbnail.'">';
 54 |         $rssfeed .= '</head>';
 55 |         $rssfeed .= '<body>';
 56 |         $rssfeed .= '<article>';
 57 |         $rssfeed .= '<header>';
 58 |         $rssfeed .= '<h1>' . $title . '</h1>';
 59 |         $rssfeed .= '<time class="op-published" datetime="' . date("D, d M Y H:i:s O", strtotime($datetime)) . '">' . date("D, d M Y H:i:s O", strtotime($datetime)) . '</time>';
 60 |         $rssfeed .= '<time class="op-modified" dateTime="' . date("D, d M Y H:i:s O", strtotime($datetime)) . '">' . date("D, d M Y H:i:s O", strtotime($datetime)) . '</time>';
 61 |         $rssfeed .= '<address>';
 62 |         $rssfeed .= '<a rel="facebook" href="https://www.facebook.com/yourwebsite.org">Video Lime</a>';
 63 |         $rssfeed .= 'Enjoy the videos and music you love, original content and share it all with friends, family and the world on YouTube.';
 64 |         $rssfeed .= '</address>';
 65 |         $rssfeed .= '<address>';
 66 |         $rssfeed .= '<a>Video Lime</a>';
 67 |         $rssfeed .= '</address>';
 68 |         $rssfeed .= '<figure>';
 69 | 
 70 |         // Change URL according to website url patterns
 71 |         $rssfeed .= '<img src="http://yourwebsite.org/upload/videos/'.$thumbnail.'" />';
 72 |         $rssfeed .= '<figcaption>' . $title . '</figcaption>';
 73 |         $rssfeed .= '</figure>';    
 74 |         $rssfeed .= '</header>';
 75 |         $rssfeed .= '<p> '.$details.' </p>';
 76 |         
 77 |         // Optional :  please reveiw Guide line https://developers.facebook.com/docs/instant-articles/reference/embeds
 78 |         $rssfeed .= '<figure class="op-interactive">';
 79 |         $rssfeed .= '<iframe class="column-width" height="180" width="320" src="https://www.youtube.com/embed/'.$youtube_id.'"></iframe>';
 80 | 
 81 |         $rssfeed .= '<figcaption>' . $title . '</figcaption>';
 82 |         $rssfeed .= '</figure>'; 
 83 | 
 84 |         $rssfeed .= '<footer>';
 85 |         $rssfeed .= '<aside>Managed By yourwebsite.org</aside>';
 86 |         $rssfeed .= '<small>Copyright (C) '.date("Y").' yourwebsite.org</small>';
 87 |         $rssfeed .= '</footer>';
 88 |         $rssfeed .= '</article>';
 89 |         $rssfeed .= '</body>';
 90 |         $rssfeed .= '</html>';
 91 |         $rssfeed .= ']]>';
 92 |         $rssfeed .= '</content:encoded>';
 93 |         $rssfeed .= '</item>';
 94 | 	}
 95 |  
 96 |     $rssfeed .= '</channel>';
 97 |     $rssfeed .= '</rss>';
 98 |  
 99 |     echo $rssfeed;
100 | ?>


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