Pulls in Twitter feed from specific twitter WordPress plug-in for developers and converts links to anchor tags

get-tweets-from-plugin.php

<?php

	/*--------------------------------------------------------------------------
	
		This pulls in tweets gathered from the WordPress plugin
		ouath-twitter-feed-for-developers and converts them into
		an <article> tag

		It takes retweets into account and then updates links within
		the tweet text to convert urls, tags, and hashes into anchor
		tags

		it is based slightly on a script found here:
		http:stackoverflow.com/questions/11533214/php-how-to-use-the-twitter-apis-data-to-convert-urls-mentions-and-hastags-in#answer-11929224
	
	--------------------------------------------------------------------------*/
	
	function parse_message($tweet) {
		if(!empty($tweet['entities'])) {
			if(count($tweet['retweeted_status'])) {
				$new_tweet = $tweet['retweeted_status']['text'];
				$ent_array = $tweet['retweeted_status']['entities'];
			} else {
				$new_tweet = $tweet['text'];
				$ent_array = $tweet['entities'];
			}
			foreach($ent_array as $area => $items) {
				switch($area) {
					case 'hashtags':
						foreach($items as $item) {
							$find = 'text';
							$prefix = '#';
							$url = 'http://twitter.com/search/?src=hash&q=%23';
							get_new_tweet($find, $prefix, $url, $item, $new_tweet);
						}
						break;
					case 'user_mentions':
						foreach($items as $item) {
							$find = 'screen_name';
							$prefix = '@';
							$url = 'https://twitter.com/';
							get_new_tweet($find, $prefix, $url, $item, $new_tweet);
						}
						break;
					case 'media': case 'urls':
						foreach($items as $item) {
							$find = 'url';
							$prefix = '';
							$url = '';
							get_new_tweet($find, $prefix, $url, $item, $new_tweet);
						}
						break;
					default:
						break;
				}
			}
		}
		return $new_tweet;
	}

	function get_new_tweet($find, $prefix, $url, $item, $new_tweet) {
		$string = $item[$find];
		$href = $url . $string;
		$start = $item['indices'][0];
		$stop = $item['indices'][1];
		$replace = $prefix . $string;
		$with = '<a href="' . $href . '">' . $prefix . $string .'</a>';
		$new_tweet = str_replace($replace, $with, $new_tweet);
	}


	$local_tweets = '';
	//check for cache from 15 minutes ago
	if(get_transient('jled_tweets_short')) {
		$local_tweets = get_transient('jled_tweets_short');
	//if it isn't found, try to update tweets
	} else {
		$tweets = getTweets(3);
		//if Twitter returned results
		if(count($tweets)) {
			//loop through it and output tweets
			foreach ($tweets as $entry) {
				$text = parse_message($entry);
				$date = date('g:i A - j M y', strtotime($entry['created_at']));
				$id = $entry['id'];
				$local_tweets .= '<article id="tweet-' . $id . '" class="tweet">' .
						'<p>' . $text . '</p>' .
						'<p><span>' . $date . '</span></p>' .
						'</article>';
			}
			//reset our 15 min and 1 day caches
			set_transient('jled_tweets_long', $local_tweets, 60 * 60 * 24 * 1);
			set_transient('jled_tweets_short', $local_tweets, 60 * 15);
		//if Twitter didn't respond
		} else {
			//check for the 1 day cache
			if(get_transient('jled_tweets_long')) {
				$local_tweets = get_transient('jled_tweets_long');
			//if we can't find that, respond with an error message
			} else {
				$local_tweets = '<article class="tweet"><p><strong>No tweets at this time.</strong></p>';
			}
		}
	}

?>