Can user send HTTP_RAW_POST_DATA to my site?
<p>A stupid question but I am a little confused.
I use pubsubhubbub and check for a new information with if(isset($_HTTP_RAW_POST_DATA)).
I check if user is logged with:</p>

<pre><code>if(isset($_SESSION['user'])) {
 //logged
}
</code></pre>

<p>Can a user send a HTTP_RAW_POST_DATA?</p>
