CEventCalendar::GetSuperposedEvents

function GetSuperposedEvents($arParams = array())
{
	$bJS = isset($arParams['bJS']) ? $arParams['bJS'] : false;
	$forExport = isset($arParams['forExport']) ? $arParams['forExport'] : false;
	$bLoadAll = isset($arParams['bLoadAll']) ? $arParams['bLoadAll'] : false;
	$result = $bJS ? '[]' : Array();
	if (!$this->bSuperpose)
		return $result;

	$bCache = $bDontCache ? false : $this->bCache;

	$arIblockIds = array();
	$ids = array();
	// Get array of iblockIds
	for($i = 0, $l = count($this->arSPCalShow); $i < $l; $i++)
	{
		$id = $this->arSPCalShow[$i]['IBLOCK_ID'];
		if (!in_array($id, $arIblockIds))
			$arIblockIds[] = $id;

		if (!isset($ids[$id]))
			$ids[$id] = array();

		$ids[$id][] = $this->arSPCalShow[$i]['ID'];
	}

	if ($bCache)
		$cache = new CPHPCache;

	for($i = 0, $l = count($arIblockIds); $i < $l; $i++)
	{
		$res = null;
		if ($bCache)
		{
			$cachePath = $this->cachePath.'events/'.$arIblockIds[$i].'/sp_events/';

			$arCacheId = array($this->curUserId, $bJS, $forExport);
			if ($bLoadAll)
				$arCacheId[] = $bLoadAll;
			else
				$arCacheId[] = $this->fromLimit." - ".$this->toLimit;
			$arCacheId[] = $ids[$arIblockIds[$i]];

			$cacheId = serialize($arCacheId);
			if ($cache->InitCache($this->cacheTime, $cacheId, $cachePath))
			{
				$res = $cache->GetVars();
				$res = $res['result'];
			}
		}

		if (!$bCache || empty($res['result']))
		{
			$res = $this->GetEvents(array(
				'iblockId' => $arIblockIds[$i],
				'bJS' => $bJS,
				'bSuperposed' => true,
				'DontSaveOptions' => false,
				'forExport' => $forExport,
				'bLoadAll' => $bLoadAll
			));

			if ($bCache)
			{
				$cache->StartDataCache($this->cacheTime, $cacheId, $cachePath);
				$cache->EndDataCache(array("result" => $res));
			}
		}

		if ($bJS)
		{
			if (!$res || $res == '[]')
				continue;
			if ($result == '[]')
				$result = $res;
			else
				$result = mb_substr($result, 0, -1).','.mb_substr($res, 1);
		}
		else
		{
			$result = array_merge($result, $res);
		}
	}

	return $result;
}