Fixed RSS for Validation + workaround for better facebook integration

- Improved RSS validation (pubDate + html content) - If your rss feed is to be parsed by facebook, it will display twitter default meta description as link description text... Not very useful. Set the provided constant to true to enable a workaround using the a_tweet.php file.
thomasyung · Aug 22, 2013 · 666507d · 666507d
1 parent 0749cda
commit 666507d
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diff --git a/a_tweet.php b/a_tweet.php
@@ -0,0 +1,90 @@
+<?php
+/*
+	fetches a given tweet, and renders an html page using the tweet's content. Useful to control how facebook publishes a link to the tweet (if just using the twitter status url, the description is Twitter's default description meta tag, yuk!).
+*/
+
+error_reporting(E_WARNING | E_ERROR);
+ini_set('display_errors',1);
+
+$tid = null;
+
+if(!isset($_GET['tid'])){
+	die("nope, sorry, no tweet specified");
+}
+
+$tid = trim($_GET['tid']);
+
+require 'tmhOAuth/tmhOAuth.php';
+require 'twitter_auth.php';
+
+$tmhOAuth = new tmhOAuth($twitter_auth);
+
+$url = "/1.1/statuses/show.json";
+$options = array(
+	'id'=> $tid,
+);
+
+// DO !
+
+$code = $tmhOAuth->request('GET', $tmhOAuth->url($url), $options);
+$tweet = json_decode($tmhOAuth->response['response'], false);
+
+
+$title= htmlspecialchars(htmlspecialchars_decode($tweet->user->name.": ".strip_tags($tweet->text)));
+$description= htmlspecialchars(htmlspecialchars_decode(strip_tags($tweet->text)));
+$description_html = find_hashtags(find_links($description));
+
+$url = htmlspecialchars("https://twitter.com/".$tweet->user->screen_name."/statuses/".$tweet->id_str);;
+$image = (strlen($tweet->entities->media[0]->media_url)>0) ? htmlspecialchars($tweet->entities->media[0]->media_url) : null;
+$datetime = new DateTime($tweet->created_at);
+$datetime->setTimezone(new DateTimeZone('Europe/Brussels'));
+$created_at = $datetime->format(DATE_RFC822);
+$profile_url= $tweet->user->profile_image_url;
+?>
+<!DOCTYPE html>
+<html>
+	<head>
+		<meta charset="utf-8">
+		<title><?php echo $title ?></title>
+
+		<!-- Meta Information starts -->
+		<meta name="description" content="<?php echo $description ?>">
+
+		<!-- Open graph starts -->
+		<meta property="og:title" content="<?php echo $title ?>">
+		<meta property="og:type" content="website">
+		<meta property="og:url" content="<?php echo $_SERVER['PHP_SELF'] ?>">
+		<meta property="og:image" content="<?php echo $image ?>">
+		<meta property="og:description" content="<?php echo $description ?>">
+		<!-- Open graph ends -->
+		<link rel="stylesheet" href="http://yui.yahooapis.com/pure/0.2.1/pure-min.css">
+		<style type="text/css">
+		body{background:#DDD;}
+		h1{font-size:100%;}
+		article{background:white;max-width:25em;margin:2em auto; padding:2em;border:1px solid #CCC;border-radius:1em}
+		img{max-width: 100%;border:1px solid #CCC;padding:4px;vertical-align: text-bottom;}
+
+		</style>
+	</head>
+
+	<body>
+	<article>
+<h1><?php echo '<img src="'.$profile_url.'"> '. $description_html ?></h1>
+<p><?php echo ($image !='') ? '<img src="'.$image.'">':'';?></p>
+<p>Source: <a href="<?php echo $url ?>" rel="nofollow">twitter</a></p>
+	</article>
+	</body>
+</html>
+<?php
+// helpers
+function find_links($text){
+	$reg_exUrl = "/(http|https|ftp|ftps)\:\/\/[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(\/\S*)?/";
+	// make the urls hyper links
+	return  (preg_match($reg_exUrl, $text, $url)) ? preg_replace($reg_exUrl, '<a href="'.$url[0].'">'.$url[0].'</a> ', $text) : $text;
+}
+
+function find_hashtags($text){
+// https://twitter.com/search?q=%23dwmaj&src=hash
+	return preg_replace("/#(\w+)/i", "<a href=\"http://twitter.com/search?q=%23$1\">#$1</a>", $text);
+}
+?>
diff --git a/twitter_json_to_rss.php b/twitter_json_to_rss.php
@@ -3,6 +3,16 @@
 require 'tmhOAuth/tmhOAuth.php';
 require 'twitter_auth.php';
 
+define('THIS_URL', 'http://'.$_SERVER['HTTP_HOST']);
+
+define('THIS_PATH',dirname($_SERVER["REQUEST_URI"]));
+
+// If your rss feed is to be parsed by facebook, it will display twitter default meta description as link description text... Not very useful. Set this to true to use a custom page, which will use the tweet's message as description.
+
+define('USE_CUSTOM_TWEET_FILE', false);
+
+// RUNTIME
+
 $tmhOAuth = new tmhOAuth($twitter_auth);
 
 $screen_name = null;
@@ -54,6 +64,7 @@
 
 $return = json_decode($tmhOAuth->response['response'], false);
 $now = date("D, d M Y H:i:s T");
+$now = rfc822Date($now);
 $link = htmlspecialchars('http://'.$_SERVER['SERVER_NAME'].$_SERVER['SCRIPT_NAME'].'?'.$_SERVER['QUERY_STRING']);
 header("Content-Type: application/xml; charset=UTF-8");
 ?>
@@ -67,17 +78,37 @@
 		<lastBuildDate><?php echo $now; ?></lastBuildDate>
 <?php
 $tweets = ($usage == 'hashtag') ? $return->statuses : $return;
-foreach ($tweets as $line){ ?>
+foreach ($tweets as $line){
+	$title= htmlspecialchars(htmlspecialchars_decode($line->user->name.": ".strip_tags($line->text)));
+	$description= htmlspecialchars(htmlspecialchars_decode(strip_tags($line->text)));
+	$url = htmlspecialchars("https://twitter.com/".$line->user->screen_name."/statuses/".$line->id_str);;
+	$image = (strlen($line->entities->media[0]->media_url)>0) ? htmlspecialchars($line->entities->media[0]->media_url) : null;
+	$created_at = rfc822Date($line->created_at);
+
+?>
 		<item>
-			<title><?php echo htmlspecialchars(htmlspecialchars_decode($line->user->name.": ".strip_tags($line->text))); ?></title>
-			<description><?php echo htmlspecialchars(htmlspecialchars_decode(strip_tags($line->text))); ?></description>
-			<pubDate><?php echo $line->created_at ?></pubDate>
-			<guid><?php echo htmlspecialchars("https://twitter.com/".$line->user->screen_name."/statuses/".$line->id_str); ?></guid>
-			<link><?php echo htmlspecialchars("https://twitter.com/".$line->user->screen_name."/statuses/".$line->id_str); ?></link>
-<?php echo (strlen($line->entities->media[0]->media_url)>0) ? '<image>'.htmlspecialchars($line->entities->media[0]->media_url).'</image>'."\n": ''; ?>
+			<title><?php echo $title; ?></title>
+			<description>
+			<![CDATA[
+			<?php
+	echo $description;
+	if (strlen($line->entities->media[0]->media_url)>0) { ?>
+				<img src="<?php echo $image; ?>">
+			<?php
+	}
+	?>	]]></description>
+			<pubDate><?php echo $created_at ?></pubDate>
+			<guid><?php echo $url; ?></guid>
+			<link><?php echo (USE_CUSTOM_TWEET_FILE) ? THIS_URL.THIS_PATH.'/a_tweet.php?tid='.$line->id_str : $url; ?></link>
 		</item>
 <?php
 }
 ?>
 </channel>
-</rss>
+</rss>
+<?php
+function rfc822Date($str){
+	$timestamp = strtotime($str);
+	return date(DATE_RSS, $timestamp);
+}
+?>