I have a client with a Wordpress blog. They are posting pictures to Twitter after emailing to blog as a post manually. The process

1. Email picture to Wordpress
2. Post is created
3. Manually shorten url using bit.ly
4. Post to twitter.

I would like to automate it. The plug currently generates a short url using the domain, bit.ly would be shorter. Here is the plug in code:

// Generate URL
    $url = preg_replace('/\/$/', '', (get_option('twitter_image_host_override_url_prefix') ? get_option('twitter_image_host_override_url_prefix') : get_option('siteurl'))).'/'.$tag;

Here is the code I found to generate the short url. Having trouble combining the two. 

function shortUrl ($url)
{
  $bitlyUser = 'TEST';
  $apiKey = 'API_KEY';

  $ch = curl_init();

  //cURL options
  curl_setopt($ch, CURLOPT_URL, 'http://api.j.mp/v3/shorten?login=' . $bitlyUser . '&apiKey=' . $apiKey .'&uri=' . htmlspecialchars($url) . '&format=txt');
  curl_setopt($ch, CURLOPT_HEADER, false);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

  //Execution
  $ret = curl_exec($ch);
  curl_close($ch);
  return $ret;

Any ideas? Appreciate it. Thanks!

Billy

I would either install, or disect, the plugin called WP-to-Twitter.

This plugin handles multiple Url shortening services and auto-tweets new posts. You can also customize the format of the tweets, auto hashtags, etc.

I do not see any issues in the code.

You can also try goo.gl which is faster. It also has an API.