Answered Sorting by pagetitle

$resources[] = $res->get('pagetitle') . '==' .$res->get('pagetitle');
$resources->sortby('pagetitle', 'ASC'); 

<?php
//Spezielle Gruppe Fachtrainer
$superusergroups = $modx->getOption('superusergroups', $scriptProperties,'8,9,11');

//Kursinformationen von Parent Kursinformationen
$parent = $modx->getOption('parent', $scriptProperties, 47);

$superusergroups = explode(',', $superusergroups);

$groups = $modx->user->getUserGroups();

$has_permission = false;
$accepted = false; //see below

//Ist der User überhaupt in der Superusergroup?
foreach ($superusergroups as $group) {
    if (in_array($group, $groups)) {

	      $has_permission = true; //user is in one of the superusergroups

          $gruppe = $group;
/*	NEW: check which superuser group
			if ($group[0] != "")
			{
			$gruppe = "1";
			}
			else if ($group[1] != "")
			{
			$gruppe = "2";
			}
			else
			{
			$gruppe = "3";
			}


 $modx->log(modX::LOG_LEVEL_ERROR, $gruppe);
 $modx->trigger_error($gruppe, E_USER_WARNING);
 */
	}
	
}
$modx->log(modX::LOG_LEVEL_ERROR, $gruppe);
//Überprüfen welche Gruppe


$resources = array();
if ($parentObj = $modx->getObject('modResource', $parent)) 
{
 $c = $modx->newQuery('modResource');
 if ($resArray = $parentObj->getMany('Children', $c)) 
 {
    foreach ($resArray as $res) 
	{

       // if ($res instanceof modResource) 
	//	{
            if ($res->get('description') == 'Impuls Lehrtrainer 2') 
			{
                if ($has_permission AND $gruppe > "10")
				{
                    $accepted = true;
                }
            } 

			else if ($res->get('description') == 'Impuls Lehrtrainer') 
			{
                if ($has_permission AND $gruppe > "8")
				{
                    $accepted = true;
                }
            } 

				else if ($res->get('description') == 'Fachtrainer') 
			{
                if ($has_permission AND $gruppe >= "8")
				{
                    $accepted = true;
                }
            } 

			else 
			{
                $accepted = true;

            }
    //    }

        if ($accepted) 
			{
           // $resources[] = $res->get('pagetitle') . '==' .$res->get('id');
		   $resources[] = $res->get('pagetitle') . '==' .$res->get('pagetitle');
		   //$resources->sortby('pagetitle', 'ASC'); 
        	}
        $accepted = false; //reset accepted to false
      }
}

}
$out = implode("||", $resources);

return $out;