Bitrix get locations group

locations.php

<?php
function getLocationGroup() {
	    // из конфига config.php
	    global $defaultLocationsGroup;
	    $obCache = new CPHPCache;

	    if($obCache->InitCache(7200, "cities", "/klamas/all")) {
    		$locationsCache = $obCache->getVars();
    		$locations = $locationsCache['cities'];

	    } elseif($obCache->StartDataCache()) {

    		$locations = array();
    
    		$db_res = CSaleLocationGroup::GetLocationList(array("LOCATION_GROUP_ID"=>$defaultLocationsGroup));
    		while($ar_res = $db_res->Fetch()) {
    		    $locations[$ar_res["LOCATION_ID"]] = CSaleLocation::GetByID($ar_res["LOCATION_ID"]);
    		}

    		foreach($locations as $location) {
    		    // РЕГИОН
    		    if(empty($location['CITY_NAME_ORIG'])) {
    			    $locations['REGIONS'][$location['REGION_ID']] = $location;
    		    } else {
    			    $locations['REGIONS'][$location['REGION_ID']]['CITIES'][$location['CITY_ID']] = $location;
    		    }
    
    		    unset($locations[$location['ID']]);
    
    		}
		    $obCache->EndDataCache(array('cities'=>$locations));
	    }
	    return $locations;
	}
	?>