Simple PHP example of adding annotations to tweets using TwitterOAuth

annotations.php

<?php
/**
 * Note: Only select accounts have annotations enabled.
 *
 * If you have questions or comments please let me know. - @abraham
 *
 * Read about annotations: 
 * https://apiwiki.twitter.com/Annotations-Overview
 *
 * Get the TwitterOAuth source code:
 * http://github.com/abraham/twitteroauth
 * git clone git@github.com:abraham/twitteroauth.git
 *
 * Get your OAuth credentials:
 * http://dev.twitter.com/pages/oauth_single_token
 */

// Include TwitterOAuth library.
require_once('twitteroauth/twitteroauth.php');

echo '<pre>';

// Build a new connection object with consumer key/secret and users access token/secret.
$connection = new TwitterOAuth('consumer key', 'consumer secret', 'access token', 'access token secret');

// Build annotations array. Notice the outer array.
$annotations = array(array('foo' => array('bar' => 'baz')));

// POST new status with annotations json_encoded.
$result = $connection->post('statuses/update', array( 'status' => 'Hello annotated world!',
                                                    'annotations' => json_encode($annotations)));

// Check if the status POSTed correctly
if (200 == $connection->http_code) {
  echo 'Success! :)';
} else {
  echo 'Failure! :(';
}

echo '<br><br>';

// Print the successfully returned status or the error message.
print_r($result);