[twitter-dev] PHP/Curl script date help

I have a script to put my Twitter feed on my site but can't work out
how to get it to show the date/how long ago it was posted.

Can anyone tell me what I need to add?

<?php
// create curl resource
$ch = curl_init();

// set url
curl_setopt($ch, CURLOPT_URL, "http://api.twitter.com/1/
statuses/user_timeline.xml?screen_name=USERNAMEHERE&count=1");

//return the transfer as a string
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

// $output contains the output string
$output = curl_exec($ch);
$tweetData = simplexml_load_string($output);
// close curl resource to free up system resources
curl_close($ch);
?>

<?php

if(count($tweetData)){
echo "<p>";
foreach($tweetData as $tweet){

echo "$tweet->text";

}

echo "</p><p>A</p><a href='http://twitter.com/
USERNAMEHERE' target='_blank'>Follow us</a>";
echo "</p>";
}
?>

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