moodle/group/groupui/creategrouping-xml.php

<?php
/**********************************************
 * Adds a new grouping
 **********************************************/

require_once('../../config.php');
require_once('../lib/lib.php');

@header('Content-Type: text/xml; charset=utf-8');
echo '<?xml version="1.0" encoding="utf-8"?>';
echo '<groupsresponse>';

$courseid = required_param('courseid', PARAM_INT);

$groupingsettings->name       = required_param('groupingname', PARAM_ALPHANUM);
$groupingsettings->description= required_param('description', PARAM_ALPHANUM);

require_login($courseid);

if (confirm_sesskey() and isteacheredit($courseid)) {
	$groupingid = groups_create_grouping($courseid, $groupingsettings);
	
	if (!$groupingid) {
		echo '<error>Failed to create grouping</error>';
	} else {
		echo '<groupingid>'.$groupingid.'</groupingid>';
	}
}

echo '</groupsresponse>';
?>