How to retrieve the user profile information using zend gdata
<p>I have authenticated a youtube user using oauth( zend gdata library used).</p>

<pre><code>$url = Zend_Gdata_AuthSub::getAuthSubTokenUri($returnUrl, $this-&gt;scope, $this-&gt;isSecure, $this-&gt;isSession);
$httpClient = Zend_Gdata_AuthSub::getHttpClient(Yii::app()-&gt;user-&gt;sessionToken);
</code></pre>

<p>How to retrieve the user profile information (I need his/her username)?
From zend gdata documentation I have found this code :</p>

<pre><code>$yt = new Zend_Gdata_YouTube();
$userProfile = $yt-&gt;getUserProfile('liz');
</code></pre>

<p>But, using oauth authentication, I dont know the username.</p>
