twitter bot not showing as retweeted on twitter feed

[rupertbj]

rather than using the RT prefix to a tweet, Twitter now provides a retweeted sign on retweeted tweets. I would like this to show up on my retweeted tweets on my twitter bot... i.e. the original user information is embedded on the feed in twitter.com/user

this is the code i have so far (using API 1.1):

    $twitter = new TwitterOAuth(CONSUMER_KEY, CONSUMER_SECRET, ACCESS_TOKEN, ACCESS_TOKEN_SECRET);
    $twitter->host = "http://search.twitter.com/";
    $search = $twitter->get('search', array('q' => '-escort -RT -ADRTBot #abudhabi', 'count' => 5));
    $twitter->host = "https://api.twitter.com/1.1/";
    foreach($search->results as $tweet) {
        $status = $tweet->text;
        if(strlen($status) > 140) $status = substr($status, 0, 139);
        $twitter->post('statuses/retweet/$tweet->id', array('status' => $status));
        print "STATUS: $tweet->id $status<br>";
        }

Any ideas would be gratefully received!!