$ret .= "</div>";
// Add notification message
if (strlen($notification) > 0) {
$ret .= $notification;
}
// Add message form
$ret .= $form_area;
// Display warning if the user isn't allowed to view a certain wall
if (isset($warning)) {
$ret .= "<h3>You are not allowed to see this page because you are not a friend of ";
$ret .= "<a href=\"view?webid=" . urlencode($owner_webid) . "\">" . $profile->get_name() . ".</a></h3>";
} else {
// Display messages
$w = new Wall($owner_hash);
$posts = $w->load(20, 0, $_REQUEST['activity']);
$offset = $w->get_offset();
// page content
$ret .= "<div id=\"wall\">\n";
$ret .= $posts;
// add Load more button
$ret .= "</div>\n";
$ret .= "<p></p>\n";
}
$ret .= "</div>\n";
// prepare etag
$etag_array = get_etag($owner_hash);
$lastmod = gmdate('D, d M Y H:i:s \\G\\M\\T', $etag_array['date']);
$etag = $etag_array['etag'];
$ifmod = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? $_SERVER['HTTP_IF_MODIFIED_SINCE'] == $lastmod : null;
$iftag = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? $_SERVER['HTTP_IF_NONE_MATCH'] == $etag : null;
if (($ifmod || $iftag) && ($ifmod !== false && $iftag !== false)) {
