It’s very simple to just add the official tweet button to your site, but if you have very long Search engine friendly URLs (see any post URL on this site) it can be a bit difficult!

To implement the tweet button with a short URL I used tinyurl, as unlike bit.ly you don’t need to create an account and the only data it sends back to you is the shortened URL.

The code should be implemented within the loop, you can even include it if you want to keep file sizes low.

//the url you want to make tiny
$maketiny = 'http://tinyurl.com/api-create.php?url='.get_permalink();

/*Initialise and set options for cURL
(this lets you transfer data between URLs)*/
$ch = curl_init();
$timeout = 5;
curl_setopt($ch, CURLOPT_URL, $maketiny);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);

//execute and close cURL
$data = curl_exec($ch);
curl_close($ch);

//You now have the tinyurl stored in $tinyurl
$tinyurl = $data;

Now that you have the tinyurl stored in the $tinyurl variable, you can use it in the twitter button!

You have two choices about how to code the button, either use JavaScript or an iFrame.

For JavaScript you need the following code:

<script src="http://platform.twitter.com/widgets.js"
type="text/javascript"></script>
<div>
   <a href="http://twitter.com/share" class="twitter-share-button"
      data-url="<?php echo $tinyurl; ?>"
      data-count="<?php the_permalink(); ?>">Tweet</a>
</div>

For an iFrame you need this code:

<iframe allowtransparency="true" frameborder="0" scrolling="no"
src="http://platform.twitter.com/widgets/tweet_button.html?
url=<?php echo $tinyurl; ?>&amp;counturl=<?php the_permalink(); ?>"
style="width:130px; height:50px;"></iframe>

The following attributes and query strings can be used:

For more information on the tweet button see the Official Twitter Tweet Button Page.