allpostsfeed.php

   1 <?php
   2 # allpostsfeed.php : script to create a feed out of all public weblog
   3 # post of a single elgg installation
   4 # coded by Vermario (www.vermario.com) , based by index.php for elgg.net
   5
   6 //let's include the basic stuff
   7 require_once("includes.php");
   8
   9 # let's create the top part of the feed, with the usual declarations:
  10 # for the language part, let's use the locale setting, that makes some sense.
  11
  12 $output = '<?xml version="1.0" encoding="UTF-8" ?' . '>';
  13 $output .= <<< END
  14 <rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
  15 <channel>
  16 <title><![CDATA[{$CFG->sitename}: Latest blog posts]]></title>
  17 <link>{$CFG->wwwroot}</link>
  18 <description><![CDATA[Latest public blog posts from {$CFG->sitename}]]></description>
  19 <generator><![CDATA[{$CFG->sitename}]]></generator>
  20 <language>{$CFG->defaultlocale}</language>
  21 END;
  22
  23 // query the database directly:
  24 $posts = get_records_sql('SELECT wp.ident, u.name, u.username, wp.body, wp.title, wp.ident as postid, wp.posted
  25 FROM '.$CFG->prefix.'weblog_posts wp
  26 LEFT JOIN '.$CFG->prefix.'users u ON u.ident = wp.weblog
  27 WHERE wp.access = "PUBLIC"
  28 ORDER BY wp.posted DESC LIMIT 20');
  29
  30 foreach ($posts as $post) {
  31
  32     $body = strip_tags($post->body);
  33     $body = preg_replace( "|\w{3,10}://[\w\.\-_]+(:\d+)?[^\s\"\'<>\(\)\{\}]*|", "", $body);
  34     $date = date("D, d M Y G:i:s O",$post->posted);
  35     $output .= <<< END
  36
  37     <item>
  38         <title><![CDATA[{$post->title}]]></title>
  39         <link>{$CFG->wwwroot}{$post->username}/weblog/{$post->postid}.html</link>
  40         <guid isPermaLink="true">{$CFG->wwwroot}{$post->username}/weblog/{$post->postid}.html</guid>
  41         <pubDate>{$date}</pubDate>
  42         <description><![CDATA[{$body}]]></description>
  43     </item>
  44
  45 END;
  46
  47 }
  48
  49 $output .= <<< END
  50 </channel></rss>
  51 END;
  52
  53     if ($output) {
  54         header("Pragma: public");
  55         header("Cache-Control: public");
  56         header('Expires: ' . gmdate("D, d M Y H:i:s", (time()+60)) . " GMT");
  57
  58         $if_none_match = (isset($_SERVER['HTTP_IF_NONE_MATCH'])) ? preg_replace('/[^0-9a-f]/', '', $_SERVER['HTTP_IF_NONE_MATCH']) : false;
  59
  60         $etag = md5($output);
  61         header('ETag: "' . $etag . '"');
  62
  63         if ($if_none_match && $if_none_match == $etag) {
  64             header("{$_SERVER['SERVER_PROTOCOL']} 304 Not Modified");
  65             exit;
  66         }
  67
  68         header("Content-Length: " . strlen($output));
  69
  70         header("Content-type: text/xml; charset=utf-8");
  71         echo $output;
  72     }
  73
  74 ?>