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/home/develito/www/components/com_sobipro/lib/cms/joomla3/base/users.php

<?php
/**
 * @package: SobiPro Library

* @author
 * Name: Sigrid Suski & Radek Suski, Sigsiu.NET GmbH
 * Email: sobi[at]sigsiu.net
 * Url: https://www.Sigsiu.NET

* @copyright Copyright (C) 2006 - 2015 Sigsiu.NET GmbH (https://www.sigsiu.net). All rights reserved.
 * @license GNU/LGPL Version 3
 * This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation, and under the additional terms according section 7 of GPL v3.
 * See http://www.gnu.org/licenses/lgpl.html and https://www.sigsiu.net/licenses.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 */

defined( 'SOBIPRO' ) || exit( 'Restricted access' );
/**
 * @author Radek Suski
 * @version 1.0
 * @created 03-Feb-2009 5:14:11 PM
 */
class SPUsers
{

public static function getGroupsField ()
	{
		$db = JFactory::getDbo();
		$db->setQuery( '
				 SELECT a.id AS value, a.title AS text, COUNT(DISTINCT b.id) AS level
				 FROM #__usergroups AS a
				 LEFT JOIN `#__usergroups` AS b ON a.lft > b.lft AND a.rgt < b.rgt
				 GROUP BY a.id
				 ORDER BY a.lft ASC'
		);
		$options = $db->loadObjectList();
		// Check for a database error.
		for ( $i = 0, $n = count( $options ); $i < $n; $i ++ ) {
			$options[ $i ]->text = str_repeat( '- ', $options[ $i ]->level ) . $options[ $i ]->text;
		}
		$gids = [];
		foreach( $options as $k => $v ) {
			$gids[] = get_object_vars( $v );
		}
		$gids[ 0 ] = [ 'value' => 0, 'text' => Sobi::Txt( 'ACL.REG_VISITOR' ), 'level' => 0 ];
		return $gids;
	}
}