array Net_NNTP_Client::getOverview ( 
     
        string $first
     
      , 
        string $last
         
    )
Returns (a certain range of) the overview of the currently selected newsgroup. selected newsgroup
        $first - first article number, start of the range
       
        $last - last article number, end of the range
     array - a nested array
     indicated by the message id of the article, every entry contains
     the header as array
     
<?php
$msgs[message_id][headername] = headercontent
?>
This function can not be called statically.
Be careful with choosing the range. It could requires some time to get a huge number of message headers.
Using getOverview()
<?php
...
$ret = $nntp->connect('news.php.net');
if( PEAR::isError($ret)) {
 // handle error
} else {
 // print the last 10 messages
 $data = $nntp->selectGroup('php.pear.dev');
 $msgs = $nntp->getOverview( $data['last'] - 10, $data[last]);
 foreach($msgs as $msg) {
    // print subjects
    echo $msg['subject'].'<br>';
 }
}
?>