CCourse::Update

function Update($ID, $arFields)
{
	global $DB;

	$ID = intval($ID);
	if ($ID < 1) return false;

	if (is_set($arFields, "ACTIVE") && $arFields["ACTIVE"] != "Y")
		$arFields["ACTIVE"] = "N";

	if (is_set($arFields, "DESCRIPTION_TYPE") && $arFields["DESCRIPTION_TYPE"] != "html")
		$arFields["DESCRIPTION_TYPE"] = "text";

	if (is_set($arFields, "DETAIL_TEXT_TYPE") && $arFields["DETAIL_TEXT_TYPE"] != "html")
		$arFields["DETAIL_TEXT_TYPE"] = "text";

	if (is_set($arFields, "PREVIEW_TEXT_TYPE") && $arFields["PREVIEW_TEXT_TYPE"] != "html")
		$arFields["PREVIEW_TEXT_TYPE"]="text";

	if (is_set($arFields, "RATING") && !in_array($arFields["RATING"], Array("Y", "N")))
		$arFields["RATING"] = NULL;

	if (is_set($arFields, "RATING_TYPE") && !in_array($arFields["RATING_TYPE"], Array("like", "standart_text", "like_graphic", "standart")))
		$arFields["RATING_TYPE"] = NULL;

	$lessonId = self::CourseGetLinkedLesson ($ID);
	if ($this->CheckFields($arFields, $ID) && $lessonId !== false)
	{
		if (array_key_exists('ID', $arFields))
			unset($arFields["ID"]);

		$arFieldsLesson = $arFields;
		$arFieldsToUnset = array ('GROUP_ID', 'SITE_ID');

		foreach ($arFieldsToUnset as $key => $value)
			if (array_key_exists($value, $arFieldsLesson))
				unset ($arFieldsLesson[$value]);

		//Sites
		if(is_set($arFields, "SITE_ID"))
		{
			$str_LID = "''";
			foreach($arFields["SITE_ID"] as $lang)
				$str_LID .= ", '".$DB->ForSql($lang)."'";

			$strSql = "DELETE FROM b_learn_course_site WHERE COURSE_ID=".$ID;
			$DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__);

			$strSql =
				"INSERT INTO b_learn_course_site(COURSE_ID, SITE_ID) ".
				"SELECT ".$ID.", LID ".
				"FROM b_lang ".
				"WHERE LID IN (".$str_LID.") ";

			$DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__);

		}

		CLearnLesson::Update($lessonId, $arFieldsLesson);

		global $CACHE_MANAGER;
		$CACHE_MANAGER->ClearByTag('LEARN_COURSE_'.$ID);

		return true;
	}

	return false;
}