CCourse::Add

function Add($arFields)
{
	global $DB;

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

	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, "PREVIEW_PICTURE") && $arFields["PREVIEW_PICTURE"]["name"] == '' && $arFields["PREVIEW_PICTURE"]["del"] == '')
		unset($arFields["PREVIEW_PICTURE"]);

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

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

	if($this->CheckFields($arFields))
	{
		unset($arFields["ID"]);

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

		// Some fields mustn't be in unilesson
		foreach ($arFieldsToUnset as $key => $value)
			if (array_key_exists($value, $arFieldsLesson))
				unset ($arFieldsLesson[$value]);

		$lessonId = CLearnLesson::Add ($arFieldsLesson, $isCourse = true);
		$ID = CLearnLesson::GetLinkedCourse ($lessonId);
		if ($ID === false)
			return (false);

		//Sites
		$str_LID = "''";
		foreach($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__);

		BitrixLearningIntegrationSearch::indexLesson($lessonId);

		CLearnCacheOfLessonTreeComponent::MarkAsDirty();

		return $ID;
	}
	return false;
}